Finding the Fourth Proportional to 2,310.57, 3,185.87 and 1,867.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.57 : 3,185.87 = 1,867.10 : x
2. Step 2: Convert to fraction form
   2,310.57/3,185.87 = 1,867.10/x
3. Step 3: Cross multiply
   2,310.57x = 3,185.87 × 1,867.10
4. Step 4: Simplify right side
   2,310.57x = 5,948,312.61
5. Step 5: Solve for x
   x = 5,948,312.61/2,310.57
6. Step 6: Final answer
   x = 2,574.39