Finding the Fourth Proportional to 2,499.86, 3,744.90 and 2,153.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.86 : 3,744.90 = 2,153.18 : x
2. Step 2: Convert to fraction form
   2,499.86/3,744.90 = 2,153.18/x
3. Step 3: Cross multiply
   2,499.86x = 3,744.90 × 2,153.18
4. Step 4: Simplify right side
   2,499.86x = 8,063,425.06
5. Step 5: Solve for x
   x = 8,063,425.06/2,499.86
6. Step 6: Final answer
   x = 3,225.56