BOSTON--(BUSINESS WIRE)--The Q4 2014 retirement savings analysis from Fidelity Investments, the nation’s largest1 provider of 401(k) accounts and Individual Retirement Accounts (IRAs), reveals: The year-end average 401(k) balance2 was $91,300, a record high for 401(k) accounts. The average 401(k) balance is up 3% from the end of Q3 and 2% year-over-year. The average IRA balance was $92,2003, up 4% year-over-year. The average 401(k) contribution4 was $9,670, an increase of 4% year-over-year. The