Finding the Fourth Proportional to 2,171.87, 3,257.69 and 710.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171.87 : 3,257.69 = 710.82 : x
2. Step 2: Convert to fraction form
   2,171.87/3,257.69 = 710.82/x
3. Step 3: Cross multiply
   2,171.87x = 3,257.69 × 710.82
4. Step 4: Simplify right side
   2,171.87x = 2,315,627.65
5. Step 5: Solve for x
   x = 2,315,627.65/2,171.87
6. Step 6: Final answer
   x = 1,066.19