Answer:
#4, #1, #3, #2
Explanation:
We will calculate the total amount for each of the credit card and then arrange them in descending order according to their interest after 36 months (3 years)
Interest on Credit card 1 =

= $2233
Interest on credit card 2 =

= $778
Interest on credit card 3 =

= $1656
Interest on credit card 4 =

= 2250
Hence the correct order to pay off all the credit card balances is
#4, #1, #3, #2