Finding the Fourth Proportional to 3,910.32, 5,395.87 and 2,231.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,910.32 : 5,395.87 = 2,231.33 : x
2. Step 2: Convert to fraction form
   3,910.32/5,395.87 = 2,231.33/x
3. Step 3: Cross multiply
   3,910.32x = 5,395.87 × 2,231.33
4. Step 4: Simplify right side
   3,910.32x = 12,039,966.61
5. Step 5: Solve for x
   x = 12,039,966.61/3,910.32
6. Step 6: Final answer
   x = 3,079.02