Whispering 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 $23 per unit. None of this inventory was sold in 2019. Relevant information is as follows.

Ending inventory units
December 31, 2019				160
December 31, 2020, by purchase date
December 2, 2020		160
July 20, 2020		50		210

During the year 2020, the following purchases and sales were made.

Purchases						Sales
March 15		360 units	at	$28		April 10		260
July 20		360 units	at	29		August 20		360
September 4		260 units	at	32		November 18		210
December 2		160 units	at	35		December 12		260

Calculate price index. (Round answer to 4 decimal places, e.g. 2.7653.) _______________________