Finding the Fourth Proportional to 1,426.88, 1,969.38 and 805.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.88 : 1,969.38 = 805.88 : x
2. Step 2: Convert to fraction form
   1,426.88/1,969.38 = 805.88/x
3. Step 3: Cross multiply
   1,426.88x = 1,969.38 × 805.88
4. Step 4: Simplify right side
   1,426.88x = 1,587,074.11
5. Step 5: Solve for x
   x = 1,587,074.11/1,426.88
6. Step 6: Final answer
   x = 1,112.27