Finding the Fourth Proportional to 3,687.41, 5,522.81 and 2,123.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,687.41 : 5,522.81 = 2,123.71 : x
2. Step 2: Convert to fraction form
   3,687.41/5,522.81 = 2,123.71/x
3. Step 3: Cross multiply
   3,687.41x = 5,522.81 × 2,123.71
4. Step 4: Simplify right side
   3,687.41x = 11,728,846.83
5. Step 5: Solve for x
   x = 11,728,846.83/3,687.41
6. Step 6: Final answer
   x = 3,180.78