Finding the Fourth Proportional to 1,426.59, 1,968.71 and 805.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.59 : 1,968.71 = 805.59 : x
2. Step 2: Convert to fraction form
   1,426.59/1,968.71 = 805.59/x
3. Step 3: Cross multiply
   1,426.59x = 1,968.71 × 805.59
4. Step 4: Simplify right side
   1,426.59x = 1,585,969.06
5. Step 5: Solve for x
   x = 1,585,969.06/1,426.59
6. Step 6: Final answer
   x = 1,111.72