Finding the Fourth Proportional to 1,132.44, 1,697.82 and 939.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.44 : 1,697.82 = 939.12 : x
2. Step 2: Convert to fraction form
   1,132.44/1,697.82 = 939.12/x
3. Step 3: Cross multiply
   1,132.44x = 1,697.82 × 939.12
4. Step 4: Simplify right side
   1,132.44x = 1,594,456.72
5. Step 5: Solve for x
   x = 1,594,456.72/1,132.44
6. Step 6: Final answer
   x = 1,407.98