Finding the Fourth Proportional to 749.88, 1,109.52 and 747.72

Step by Step Solution

1. Step 1: Write the proportion equation
   749.88 : 1,109.52 = 747.72 : x
2. Step 2: Convert to fraction form
   749.88/1,109.52 = 747.72/x
3. Step 3: Cross multiply
   749.88x = 1,109.52 × 747.72
4. Step 4: Simplify right side
   749.88x = 829,610.29
5. Step 5: Solve for x
   x = 829,610.29/749.88
6. Step 6: Final answer
   x = 1,106.32