The following are historical demand data:

$\backslash$table$[[$YEAR$,,$ACTUAL$],[2$ years ago,SEASON,DEMAND,,,$],[$Spring$,205,,,],[$Summer$,151,,,],[$Fall$,379,,,],[$last year,Winter,$560,,,],[,$Spring,$481,,,],[,$Summer,$268,,,],[,$Fall,$679,,,],[,$Winter,$959,,,]]$

Use regression analysis and seasonal indexes to forecast this summer's demand. Note: Do not round intermediate calculations. Round your answer to the nearest whole number.

Forecast for this summer's demand