Finding the Fourth Proportional to 2,499.30, 3,447.81 and 1,615.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.30 : 3,447.81 = 1,615.86 : x
2. Step 2: Convert to fraction form
   2,499.30/3,447.81 = 1,615.86/x
3. Step 3: Cross multiply
   2,499.30x = 3,447.81 × 1,615.86
4. Step 4: Simplify right side
   2,499.30x = 5,571,178.27
5. Step 5: Solve for x
   x = 5,571,178.27/2,499.30
6. Step 6: Final answer
   x = 2,229.10