An attorney, Fort was appointed by Governor George B. McClellan, a Democrat, to the First District Court of Newark, a position he held through subsequent Democratic administrations until he stepped down in 1886. Fort was a delegate to the Republican National Convention in 1884 and 1896. In 1900, Governor Foster M. Voorhees appointed him to the New Jersey Supreme Court, where he remained until 1907. Fort was a delegate to the 1912 Republican National Convention.