Finding the Fourth Proportional to 2,171.86, 3,257.68 and 710.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171.86 : 3,257.68 = 710.82 : x
2. Step 2: Convert to fraction form
   2,171.86/3,257.68 = 710.82/x
3. Step 3: Cross multiply
   2,171.86x = 3,257.68 × 710.82
4. Step 4: Simplify right side
   2,171.86x = 2,315,624.10
5. Step 5: Solve for x
   x = 2,315,624.10/2,171.86
6. Step 6: Final answer
   x = 1,066.19