Crane Corporation began operations on December 1, 2019. The only inventory transaction in 2019 was the purchase of inventory on December 10, 2019, at a cost of $ 21 per unit. None of this inventory was sold in 2019. Relevant information is as follows. 110 Ending inventory units December 31, 2019 December 31, 2020, by purchase date December 2, 2020 July 20, 2020 110 50 160 During the year 2020, the following purchases and sales were made. Purchases Sales 210 310 March 15 July 20 September 4 December 2 310 units at $25 310 units at 26 210 units at 29 110 units at 32 April 10 August 20 November 18 December 12 160 210 The company uses the periodic inventory method. Calculate price index. (Round answer to 4 decimal places, e.g. 2.7653.) Price Index