Finding the Fourth Proportional to 2,325.52, 3,488.71 and 765.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,325.52 : 3,488.71 = 765.61 : x
2. Step 2: Convert to fraction form
   2,325.52/3,488.71 = 765.61/x
3. Step 3: Cross multiply
   2,325.52x = 3,488.71 × 765.61
4. Step 4: Simplify right side
   2,325.52x = 2,670,991.26
5. Step 5: Solve for x
   x = 2,670,991.26/2,325.52
6. Step 6: Final answer
   x = 1,148.56