Lehman Brothers 4th-Qtr Profit Up 22 Pct  NEW YORK (Reuters) - U.S. investment bank Lehman Brothers  Holdings Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=LEH.N target=/stocks/quickinfo/fullquote"&gt;LEH.N&lt;/A&gt; on Wednesday said fourth-quarter profit  rose 22 percent on continued strength from fixed-income  businesses and record investment banking revenue.