Finding the Fourth Proportional to 1,426.28, 1,968.24 and 805.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.28 : 1,968.24 = 805.28 : x
2. Step 2: Convert to fraction form
   1,426.28/1,968.24 = 805.28/x
3. Step 3: Cross multiply
   1,426.28x = 1,968.24 × 805.28
4. Step 4: Simplify right side
   1,426.28x = 1,584,984.31
5. Step 5: Solve for x
   x = 1,584,984.31/1,426.28
6. Step 6: Final answer
   x = 1,111.27