Finding the Fourth Proportional to 3,724.41, 5,141.31 and 2,381.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,724.41 : 5,141.31 = 2,381.78 : x
2. Step 2: Convert to fraction form
   3,724.41/5,141.31 = 2,381.78/x
3. Step 3: Cross multiply
   3,724.41x = 5,141.31 × 2,381.78
4. Step 4: Simplify right side
   3,724.41x = 12,245,468.84
5. Step 5: Solve for x
   x = 12,245,468.84/3,724.41
6. Step 6: Final answer
   x = 3,287.90