Finding the Fourth Proportional to 2,499.55, 3,447.29 and 1,871.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.55 : 3,447.29 = 1,871.57 : x
2. Step 2: Convert to fraction form
   2,499.55/3,447.29 = 1,871.57/x
3. Step 3: Cross multiply
   2,499.55x = 3,447.29 × 1,871.57
4. Step 4: Simplify right side
   2,499.55x = 6,451,840.25
5. Step 5: Solve for x
   x = 6,451,840.25/2,499.55
6. Step 6: Final answer
   x = 2,581.20