Finding the Fourth Proportional to 3,108.56, 4,289.82 and 1,711.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,108.56 : 4,289.82 = 1,711.31 : x
2. Step 2: Convert to fraction form
   3,108.56/4,289.82 = 1,711.31/x
3. Step 3: Cross multiply
   3,108.56x = 4,289.82 × 1,711.31
4. Step 4: Simplify right side
   3,108.56x = 7,341,218.31
5. Step 5: Solve for x
   x = 7,341,218.31/3,108.56
6. Step 6: Final answer
   x = 2,361.61