Finding the Fourth Proportional to 4,139.91, 6,210.77 and 2,061.05

Step by Step Solution

1. Step 1: Write the proportion equation
   4,139.91 : 6,210.77 = 2,061.05 : x
2. Step 2: Convert to fraction form
   4,139.91/6,210.77 = 2,061.05/x
3. Step 3: Cross multiply
   4,139.91x = 6,210.77 × 2,061.05
4. Step 4: Simplify right side
   4,139.91x = 12,800,666.15
5. Step 5: Solve for x
   x = 12,800,666.15/4,139.91
6. Step 6: Final answer
   x = 3,092.02