Question: Here are the data for the past 21 months for actual sales of a particular product: LAST YEAR THIS YEAR January 310 270 February 405

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

LAST YEAR THIS YEAR
January 310 270
February 405 365
March 380 360
April 470 455
May 415 395
June 490 400
July 440 340
August 325 260
September 375 360
October 540
November 595
December 515

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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