Finding the Fourth Proportional to 3,856.99, 5,787.51 and 2,103.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,856.99 : 5,787.51 = 2,103.25 : x
2. Step 2: Convert to fraction form
   3,856.99/5,787.51 = 2,103.25/x
3. Step 3: Cross multiply
   3,856.99x = 5,787.51 × 2,103.25
4. Step 4: Simplify right side
   3,856.99x = 12,172,580.41
5. Step 5: Solve for x
   x = 12,172,580.41/3,856.99
6. Step 6: Final answer
   x = 3,155.98