Finding the Fourth Proportional to 1,127.32, 1,691.52 and 397.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,127.32 : 1,691.52 = 397.24 : x
2. Step 2: Convert to fraction form
   1,127.32/1,691.52 = 397.24/x
3. Step 3: Cross multiply
   1,127.32x = 1,691.52 × 397.24
4. Step 4: Simplify right side
   1,127.32x = 671,933.69
5. Step 5: Solve for x
   x = 671,933.69/1,127.32
6. Step 6: Final answer
   x = 596.05