Finding the Fourth Proportional to 3,910.71, 5,395.41 and 2,230.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,910.71 : 5,395.41 = 2,230.91 : x
2. Step 2: Convert to fraction form
   3,910.71/5,395.41 = 2,230.91/x
3. Step 3: Cross multiply
   3,910.71x = 5,395.41 × 2,230.91
4. Step 4: Simplify right side
   3,910.71x = 12,036,667.38
5. Step 5: Solve for x
   x = 12,036,667.38/3,910.71
6. Step 6: Final answer
   x = 3,077.87