Finding the Fourth Proportional to 4,978.77, 7,471.61 and 2,057.10

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.77 : 7,471.61 = 2,057.10 : x
2. Step 2: Convert to fraction form
   4,978.77/7,471.61 = 2,057.10/x
3. Step 3: Cross multiply
   4,978.77x = 7,471.61 × 2,057.10
4. Step 4: Simplify right side
   4,978.77x = 15,369,838.65
5. Step 5: Solve for x
   x = 15,369,838.65/4,978.77
6. Step 6: Final answer
   x = 3,087.08