Finding the Fourth Proportional to 2,496.28, 3,744.47 and 764.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,496.28 : 3,744.47 = 764.91 : x
2. Step 2: Convert to fraction form
   2,496.28/3,744.47 = 764.91/x
3. Step 3: Cross multiply
   2,496.28x = 3,744.47 × 764.91
4. Step 4: Simplify right side
   2,496.28x = 2,864,182.55
5. Step 5: Solve for x
   x = 2,864,182.55/2,496.28
6. Step 6: Final answer
   x = 1,147.38