Finding the Fourth Proportional to 2,328.61, 3,493.12 and 747.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.61 : 3,493.12 = 747.55 : x
2. Step 2: Convert to fraction form
   2,328.61/3,493.12 = 747.55/x
3. Step 3: Cross multiply
   2,328.61x = 3,493.12 × 747.55
4. Step 4: Simplify right side
   2,328.61x = 2,611,281.86
5. Step 5: Solve for x
   x = 2,611,281.86/2,328.61
6. Step 6: Final answer
   x = 1,121.39