Finding the Fourth Proportional to 2,151.52, 3,227.70 and 764.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.52 : 3,227.70 = 764.96 : x
2. Step 2: Convert to fraction form
   2,151.52/3,227.70 = 764.96/x
3. Step 3: Cross multiply
   2,151.52x = 3,227.70 × 764.96
4. Step 4: Simplify right side
   2,151.52x = 2,469,061.39
5. Step 5: Solve for x
   x = 2,469,061.39/2,151.52
6. Step 6: Final answer
   x = 1,147.59