Finding the Fourth Proportional to 2,517.59, 3,776.42 and 874.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,517.59 : 3,776.42 = 874.17 : x
2. Step 2: Convert to fraction form
   2,517.59/3,776.42 = 874.17/x
3. Step 3: Cross multiply
   2,517.59x = 3,776.42 × 874.17
4. Step 4: Simplify right side
   2,517.59x = 3,301,235.26
5. Step 5: Solve for x
   x = 3,301,235.26/2,517.59
6. Step 6: Final answer
   x = 1,311.27