To calculate the federal tax liability from the investment income, we need to consider the following steps:

Convert the foreign dividend to Canadian dollars using the exchange rate. In this case, $882.02 USD x 1.3605 = $1,200.00 CAD.

Gross up the eligible dividend by the enhanced dividend gross-up rate of 38%. In this case, $1,800 x 1.38 = $2,484.

Add the grossed-up eligible dividend and the foreign dividend to get the total taxable income from dividends. In this case, $2,484 + $1,200 = $3,684.

Multiply the total taxable income from dividends by the federal marginal tax rate of 29% to get the gross federal tax payable. In this case, $3,684 x 0.29 = $1,068.36.

Multiply the grossed-up eligible dividend by the federal dividend tax credit rate of 15% to get the federal dividend tax credit. In this case, $2,484 x 0.15 = $372.60.

Subtract the federal dividend tax credit from the gross federal tax payable to get the net federal tax liability. In this case, $1,068.36 - $372.60 = $695.76.

Therefore, Firmansyah’s federal tax liability from his investment income is $695.76.

References: 1: Canadian Investment Funds Course - IFSE Institute 2 (Unit 9: Retirement)