Finding the Fourth Proportional to 1,145.32, 1,579.83 and 747.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.32 : 1,579.83 = 747.61 : x
2. Step 2: Convert to fraction form
   1,145.32/1,579.83 = 747.61/x
3. Step 3: Cross multiply
   1,145.32x = 1,579.83 × 747.61
4. Step 4: Simplify right side
   1,145.32x = 1,181,096.71
5. Step 5: Solve for x
   x = 1,181,096.71/1,145.32
6. Step 6: Final answer
   x = 1,031.24