Finding the Fourth Proportional to 2,391.40, 3,587.46 and 747.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.40 : 3,587.46 = 747.59 : x
2. Step 2: Convert to fraction form
   2,391.40/3,587.46 = 747.59/x
3. Step 3: Cross multiply
   2,391.40x = 3,587.46 × 747.59
4. Step 4: Simplify right side
   2,391.40x = 2,681,949.22
5. Step 5: Solve for x
   x = 2,681,949.22/2,391.40
6. Step 6: Final answer
   x = 1,121.50