I cannot, for the life of me, figure this out. please show steps so I see what I'm doing wrong.

Required information [The following information applies to the questions displayed below.) Metro Car Washes, Inc. is reviewing an investment proposal. The initial cost as well as the estimate of the book value of the investment at the end of each year, the net after-tax cash flows for each year, and the net income for each year are presented in the following schedule. The salvage value of the investment at the end of each year is equal to its book value. There would be no salvage value at the end of the investment's life. Initial Cost Annual Net After-Tax Annual Year and Book Value Cash Flows Net Income 0 $315,000 210,000 $138,000 $33,000 2. 126,000 119,000 35,000 63,000 100,000 37,000 21,000 81,000 39,000 62,000 41,000 1 Management uses a 12 percent after-tax target rate of return for new investment proposals. Use Appendix A for your reference. (Use appropriate factor(s) from the tables provided.) Required: 1. Compute the project's payback period. Assume that the cash flows in years 1 through 5 occur uniformly throughout eactfyear, (Round your answer to 2 decimal places.) Answer is complete but not entirely correct. Payback 2.92 years period