Finding the Fourth Proportional to 3,131.01, 4,696.72 and 2,581.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.01 : 4,696.72 = 2,581.52 : x
2. Step 2: Convert to fraction form
   3,131.01/4,696.72 = 2,581.52/x
3. Step 3: Cross multiply
   3,131.01x = 4,696.72 × 2,581.52
4. Step 4: Simplify right side
   3,131.01x = 12,124,646.68
5. Step 5: Solve for x
   x = 12,124,646.68/3,131.01
6. Step 6: Final answer
   x = 3,872.44