By Jonathan Stempel (Reuters) – Warren Buffett’s Berkshire Hathaway Inc on Saturday posted a $2.69 billion third-quarter loss as rising inflation, falling stock investments and a big loss from Hurricane Ian offset improvement in many of the conglomerate’s businesses. Operating profit nevertheless rose by 20%, topping analyst forecasts. Berkshire benefited from increased demand and prices for new home sales, industrial products and energy, while the U.S. Federal Reserve’s inflation-fighting campaign helped Berkshire generate more income from insurance investments. “On balance, results were stro…