Brian is photographing the Washington Monument and wonders how tall the monument is. Brian places his 5 ft. camera tripod approximately 100 yards from the base of the monument. Lying on the ground, he visually aligns the top of his tripod with the top of the monument and marks his location on the ground, approximately 2 feet 9 in. from the center of his tripod. Using Brian's measurements, approximate the height of the Washington Monument to the nearest whole foot.