Finding the Fourth Proportional to 3,910.09, 5,395.71 and 2,231.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,910.09 : 5,395.71 = 2,231.43 : x
2. Step 2: Convert to fraction form
   3,910.09/5,395.71 = 2,231.43/x
3. Step 3: Cross multiply
   3,910.09x = 5,395.71 × 2,231.43
4. Step 4: Simplify right side
   3,910.09x = 12,040,168.23
5. Step 5: Solve for x
   x = 12,040,168.23/3,910.09
6. Step 6: Final answer
   x = 3,079.26