(Reuters) - Coca-Cola Co forecast full-year profit well below Wall Street expectations on Thursday and posted a drop in soda sales for the fourth quarter as price increases in North America crimped demand, sending its shares down 3 percent.Coca-Cola and rival PepsiCo Inc are wrestling with rising freight and commodity costs even as they spend heavily on building a portfolio of non-carbonated drinks to attract health-conscious consumers.To counter the rising costs, Coca-Cola has raised prices of..