A loan of $2291 borrowed today is to be repaid in three equal installments due in one-and-a-half years, four years, and five-and-a-half years, respectively. What is the size of the equal installments if money is worth 9.7% compounded monthly?

The payments are each $ ____.

(Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)