Finding the Fourth Proportional to 2,591.57, 3,887.24 and 742.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.57 : 3,887.24 = 742.61 : x
2. Step 2: Convert to fraction form
   2,591.57/3,887.24 = 742.61/x
3. Step 3: Cross multiply
   2,591.57x = 3,887.24 × 742.61
4. Step 4: Simplify right side
   2,591.57x = 2,886,683.86
5. Step 5: Solve for x
   x = 2,886,683.86/2,591.57
6. Step 6: Final answer
   x = 1,113.88