Please help me answer this question as accurately as possible

Scheduled payments of $1017, $1191, and $303 are due in one year, three-and-a-half years, and five-and-a-half years respectively. What is the equivalent single replacement payment three years from now if interest is 9.9% compounded monthly? The equivalent single replacement payment is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)