Finding the Fourth Proportional to 2,225.59, 3,338.46 and 764.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.59 : 3,338.46 = 764.73 : x
2. Step 2: Convert to fraction form
   2,225.59/3,338.46 = 764.73/x
3. Step 3: Cross multiply
   2,225.59x = 3,338.46 × 764.73
4. Step 4: Simplify right side
   2,225.59x = 2,553,020.52
5. Step 5: Solve for x
   x = 2,553,020.52/2,225.59
6. Step 6: Final answer
   x = 1,147.12