Finding the Fourth Proportional to 1,426.88, 1,969.22 and 867.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.88 : 1,969.22 = 867.49 : x
2. Step 2: Convert to fraction form
   1,426.88/1,969.22 = 867.49/x
3. Step 3: Cross multiply
   1,426.88x = 1,969.22 × 867.49
4. Step 4: Simplify right side
   1,426.88x = 1,708,275.90
5. Step 5: Solve for x
   x = 1,708,275.90/1,426.88
6. Step 6: Final answer
   x = 1,197.21