Finding the Fourth Proportional to 2,540.82, 3,501.56 and 2,313.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.82 : 3,501.56 = 2,313.20 : x
2. Step 2: Convert to fraction form
   2,540.82/3,501.56 = 2,313.20/x
3. Step 3: Cross multiply
   2,540.82x = 3,501.56 × 2,313.20
4. Step 4: Simplify right side
   2,540.82x = 8,099,808.59
5. Step 5: Solve for x
   x = 8,099,808.59/2,540.82
6. Step 6: Final answer
   x = 3,187.87