Finding the Fourth Proportional to 2,288.50, 3,432.78 and 749.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.50 : 3,432.78 = 749.50 : x
2. Step 2: Convert to fraction form
   2,288.50/3,432.78 = 749.50/x
3. Step 3: Cross multiply
   2,288.50x = 3,432.78 × 749.50
4. Step 4: Simplify right side
   2,288.50x = 2,572,868.61
5. Step 5: Solve for x
   x = 2,572,868.61/2,288.50
6. Step 6: Final answer
   x = 1,124.26