I am so confused on how to start this question. Can some explain to me how to do this problem.

2 pts. Tahquamenon Co. adopted the dollar-value LIFO method of inventory valuation on December 31, 2017. Its inventory at that date was $1,050,000 and the relevant price index was 100. Information regarding inventory for subsequent years is presented below. What is the cost of the ending inventory at December 31, 2020 under dollar- value LIFO? Use any number of columns or rows you need. Reference cells. Round to whole dollars. Highlight your answer in yellow and put a thick outside border around the cell. Ending Inventory Inventory in Price- $ Value LIFO (End-of-Year Price-Index Base Year Layer- Layers of Year Total for that Prices) Inventory Index for Prices that year year. 2017 $ 1,050,000 100 2018 $ 1,284,000 106 2019 $ 1,450,000 128 2020 $ 1,625,500 130 Check Figure: $ 1,290,625