Finding the Fourth Proportional to 3,932.91, 5,426.40 and 2,231.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,932.91 : 5,426.40 = 2,231.46 : x
2. Step 2: Convert to fraction form
   3,932.91/5,426.40 = 2,231.46/x
3. Step 3: Cross multiply
   3,932.91x = 5,426.40 × 2,231.46
4. Step 4: Simplify right side
   3,932.91x = 12,108,794.54
5. Step 5: Solve for x
   x = 12,108,794.54/3,932.91
6. Step 6: Final answer
   x = 3,078.84