Finding the Fourth Proportional to 1,008.29, 1,504.94 and 868.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.29 : 1,504.94 = 868.86 : x
2. Step 2: Convert to fraction form
   1,008.29/1,504.94 = 868.86/x
3. Step 3: Cross multiply
   1,008.29x = 1,504.94 × 868.86
4. Step 4: Simplify right side
   1,008.29x = 1,307,584.34
5. Step 5: Solve for x
   x = 1,307,584.34/1,008.29
6. Step 6: Final answer
   x = 1,296.84