Finding the Fourth Proportional to 2,577.98, 3,867.17 and 1,116.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.98 : 3,867.17 = 1,116.87 : x
2. Step 2: Convert to fraction form
   2,577.98/3,867.17 = 1,116.87/x
3. Step 3: Cross multiply
   2,577.98x = 3,867.17 × 1,116.87
4. Step 4: Simplify right side
   2,577.98x = 4,319,120.57
5. Step 5: Solve for x
   x = 4,319,120.57/2,577.98
6. Step 6: Final answer
   x = 1,675.39