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

	LAST YEAR	THIS YEAR
January	325	315
February	432	335
March	455	340
April	495	445
May	440	415
June	475	385
July	390	355
August	330	285
September	350	350
October	490
November	580
December	495

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.)

Forecast for the fourth quarter