Finding the Fourth Proportional to 2,487.41, 3,729.24 and 2,144.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.41 : 3,729.24 = 2,144.78 : x
2. Step 2: Convert to fraction form
   2,487.41/3,729.24 = 2,144.78/x
3. Step 3: Cross multiply
   2,487.41x = 3,729.24 × 2,144.78
4. Step 4: Simplify right side
   2,487.41x = 7,998,399.37
5. Step 5: Solve for x
   x = 7,998,399.37/2,487.41
6. Step 6: Final answer
   x = 3,215.55