Finding the Fourth Proportional to 2,607.55, 3,910.71 and 758.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.55 : 3,910.71 = 758.25 : x
2. Step 2: Convert to fraction form
   2,607.55/3,910.71 = 758.25/x
3. Step 3: Cross multiply
   2,607.55x = 3,910.71 × 758.25
4. Step 4: Simplify right side
   2,607.55x = 2,965,295.86
5. Step 5: Solve for x
   x = 2,965,295.86/2,607.55
6. Step 6: Final answer
   x = 1,137.20