Finding the Fourth Proportional to 1,650.71, 2,471.27 and 868.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,650.71 : 2,471.27 = 868.86 : x
2. Step 2: Convert to fraction form
   1,650.71/2,471.27 = 868.86/x
3. Step 3: Cross multiply
   1,650.71x = 2,471.27 × 868.86
4. Step 4: Simplify right side
   1,650.71x = 2,147,183.31
5. Step 5: Solve for x
   x = 2,147,183.31/1,650.71
6. Step 6: Final answer
   x = 1,300.76