Mr. Quixote is considering an investment in alternative energy. He estimates that the project has annual cash inflows of $4,700, $3,600, $4,800, and $4,000, for the next four years, respectively. The discount rate is 14 percent. What is the discounted payback period for these cash flows if the initial cost is $7,500? (Do not round Intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Discounted payback period years