Finding the Fourth Proportional to 1,024.24, 1,530.72 and 748.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,024.24 : 1,530.72 = 748.48 : x
2. Step 2: Convert to fraction form
   1,024.24/1,530.72 = 748.48/x
3. Step 3: Cross multiply
   1,024.24x = 1,530.72 × 748.48
4. Step 4: Simplify right side
   1,024.24x = 1,145,713.31
5. Step 5: Solve for x
   x = 1,145,713.31/1,024.24
6. Step 6: Final answer
   x = 1,118.60