Finding the Fourth Proportional to 2,488.16, 3,732.25 and 756.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.16 : 3,732.25 = 756.78 : x
2. Step 2: Convert to fraction form
   2,488.16/3,732.25 = 756.78/x
3. Step 3: Cross multiply
   2,488.16x = 3,732.25 × 756.78
4. Step 4: Simplify right side
   2,488.16x = 2,824,492.16
5. Step 5: Solve for x
   x = 2,824,492.16/2,488.16
6. Step 6: Final answer
   x = 1,135.18