Finding the Fourth Proportional to 1,222.43, 1,684.69 and 868.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222.43 : 1,684.69 = 868.37 : x
2. Step 2: Convert to fraction form
   1,222.43/1,684.69 = 868.37/x
3. Step 3: Cross multiply
   1,222.43x = 1,684.69 × 868.37
4. Step 4: Simplify right side
   1,222.43x = 1,462,934.26
5. Step 5: Solve for x
   x = 1,462,934.26/1,222.43
6. Step 6: Final answer
   x = 1,196.74