Finding the Fourth Proportional to 3,881.05, 5,812.31 and 2,123.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,881.05 : 5,812.31 = 2,123.43 : x
2. Step 2: Convert to fraction form
   3,881.05/5,812.31 = 2,123.43/x
3. Step 3: Cross multiply
   3,881.05x = 5,812.31 × 2,123.43
4. Step 4: Simplify right side
   3,881.05x = 12,342,033.42
5. Step 5: Solve for x
   x = 12,342,033.42/3,881.05
6. Step 6: Final answer
   x = 3,180.08