Finding the Fourth Proportional to 3,905.33, 5,861.12 and 2,057.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,905.33 : 5,861.12 = 2,057.54 : x
2. Step 2: Convert to fraction form
   3,905.33/5,861.12 = 2,057.54/x
3. Step 3: Cross multiply
   3,905.33x = 5,861.12 × 2,057.54
4. Step 4: Simplify right side
   3,905.33x = 12,059,449.25
5. Step 5: Solve for x
   x = 12,059,449.25/3,905.33
6. Step 6: Final answer
   x = 3,087.95