Finding the Fourth Proportional to 1,426.30, 1,968.24 and 805.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.30 : 1,968.24 = 805.30 : x
2. Step 2: Convert to fraction form
   1,426.30/1,968.24 = 805.30/x
3. Step 3: Cross multiply
   1,426.30x = 1,968.24 × 805.30
4. Step 4: Simplify right side
   1,426.30x = 1,585,023.67
5. Step 5: Solve for x
   x = 1,585,023.67/1,426.30
6. Step 6: Final answer
   x = 1,111.28