Finding the Fourth Proportional to 1,224.52, 1,689.33 and 758.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224.52 : 1,689.33 = 758.50 : x
2. Step 2: Convert to fraction form
   1,224.52/1,689.33 = 758.50/x
3. Step 3: Cross multiply
   1,224.52x = 1,689.33 × 758.50
4. Step 4: Simplify right side
   1,224.52x = 1,281,356.81
5. Step 5: Solve for x
   x = 1,281,356.81/1,224.52
6. Step 6: Final answer
   x = 1,046.42