Finding the Fourth Proportional to 4,081.37, 5,631.89 and 2,312.87

Step by Step Solution

1. Step 1: Write the proportion equation
   4,081.37 : 5,631.89 = 2,312.87 : x
2. Step 2: Convert to fraction form
   4,081.37/5,631.89 = 2,312.87/x
3. Step 3: Cross multiply
   4,081.37x = 5,631.89 × 2,312.87
4. Step 4: Simplify right side
   4,081.37x = 13,025,789.70
5. Step 5: Solve for x
   x = 13,025,789.70/4,081.37
6. Step 6: Final answer
   x = 3,191.53