Finding the Fourth Proportional to 2,688.30, 4,031.40 and 932.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688.30 : 4,031.40 = 932.83 : x
2. Step 2: Convert to fraction form
   2,688.30/4,031.40 = 932.83/x
3. Step 3: Cross multiply
   2,688.30x = 4,031.40 × 932.83
4. Step 4: Simplify right side
   2,688.30x = 3,760,610.86
5. Step 5: Solve for x
   x = 3,760,610.86/2,688.30
6. Step 6: Final answer
   x = 1,398.88