Finding the Fourth Proportional to 2,330.72, 3,496.78 and 687.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,330.72 : 3,496.78 = 687.32 : x
2. Step 2: Convert to fraction form
   2,330.72/3,496.78 = 687.32/x
3. Step 3: Cross multiply
   2,330.72x = 3,496.78 × 687.32
4. Step 4: Simplify right side
   2,330.72x = 2,403,406.83
5. Step 5: Solve for x
   x = 2,403,406.83/2,330.72
6. Step 6: Final answer
   x = 1,031.19