Finding the Fourth Proportional to 3,860.96, 5,787.86 and 2,103.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860.96 : 5,787.86 = 2,103.39 : x
2. Step 2: Convert to fraction form
   3,860.96/5,787.86 = 2,103.39/x
3. Step 3: Cross multiply
   3,860.96x = 5,787.86 × 2,103.39
4. Step 4: Simplify right side
   3,860.96x = 12,174,116.33
5. Step 5: Solve for x
   x = 12,174,116.33/3,860.96
6. Step 6: Final answer
   x = 3,153.14