Finding the Fourth Proportional to 3,910.17, 5,859.74 and 2,057.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,910.17 : 5,859.74 = 2,057.55 : x
2. Step 2: Convert to fraction form
   3,910.17/5,859.74 = 2,057.55/x
3. Step 3: Cross multiply
   3,910.17x = 5,859.74 × 2,057.55
4. Step 4: Simplify right side
   3,910.17x = 12,056,724.17
5. Step 5: Solve for x
   x = 12,056,724.17/3,910.17
6. Step 6: Final answer
   x = 3,083.42