Finding the Fourth Proportional to 1,426.80, 1,969.12 and 867.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.80 : 1,969.12 = 867.14 : x
2. Step 2: Convert to fraction form
   1,426.80/1,969.12 = 867.14/x
3. Step 3: Cross multiply
   1,426.80x = 1,969.12 × 867.14
4. Step 4: Simplify right side
   1,426.80x = 1,707,502.72
5. Step 5: Solve for x
   x = 1,707,502.72/1,426.80
6. Step 6: Final answer
   x = 1,196.74