Finding the Fourth Proportional to 3,857.24, 5,787.89 and 2,103.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,857.24 : 5,787.89 = 2,103.50 : x
2. Step 2: Convert to fraction form
   3,857.24/5,787.89 = 2,103.50/x
3. Step 3: Cross multiply
   3,857.24x = 5,787.89 × 2,103.50
4. Step 4: Simplify right side
   3,857.24x = 12,174,826.62
5. Step 5: Solve for x
   x = 12,174,826.62/3,857.24
6. Step 6: Final answer
   x = 3,156.36