Question: Here are the data for the past 21 months for actual sales of a particular product: LAST YEAR THIS YEAR January 345 290 February 395

Here are the data for the past 21 months for actual sales of a particular product:

LAST YEAR THIS YEAR
January 345 290
February 395 375
March 470 365
April 460 475
May 400 440
June 470 325
July 430 365
August 325 280
September 375 375
October 535
November 570
December 550

1) Develop a forecast for the fourth quarter using a three-quarter, weighted moving average. Weight the most recent quarter 0.50, the second most recent 0.25, and the third 0.25. Do the problem using quarters, as opposed to forecasting separate months. (Round your answer to 2 decimal places.)

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