Finding the Fourth Proportional to 3,057.10, 4,218.72 and 1,659.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,057.10 : 4,218.72 = 1,659.82 : x
2. Step 2: Convert to fraction form
   3,057.10/4,218.72 = 1,659.82/x
3. Step 3: Cross multiply
   3,057.10x = 4,218.72 × 1,659.82
4. Step 4: Simplify right side
   3,057.10x = 7,002,315.83
5. Step 5: Solve for x
   x = 7,002,315.83/3,057.10
6. Step 6: Final answer
   x = 2,290.51