By Stephen Culp NEW YORK (Reuters) – The S&P 500 closed the books on its steepest September decline in two decades on Friday, skidding across the finish line of a tumultuous quarter fraught with historically hot inflation, rising interest rates and recession fears. All three major indexes veered to a sharply lower end, having quashed a brief rally early in the session. The S&P and the Dow notched their third consecutive weekly declines, and all three indexes posted their second straight monthly losses. In the first nine months of 2022, Wall Street suffered three quarterly declines in a row, th…