Finding the Fourth Proportional to 1,003.24, 1,503.24 and 759.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.24 : 1,503.24 = 759.43 : x
2. Step 2: Convert to fraction form
   1,003.24/1,503.24 = 759.43/x
3. Step 3: Cross multiply
   1,003.24x = 1,503.24 × 759.43
4. Step 4: Simplify right side
   1,003.24x = 1,141,605.55
5. Step 5: Solve for x
   x = 1,141,605.55/1,003.24
6. Step 6: Final answer
   x = 1,137.92