Finding the Fourth Proportional to 1,426.20, 1,967.96 and 796.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.20 : 1,967.96 = 796.74 : x
2. Step 2: Convert to fraction form
   1,426.20/1,967.96 = 796.74/x
3. Step 3: Cross multiply
   1,426.20x = 1,967.96 × 796.74
4. Step 4: Simplify right side
   1,426.20x = 1,567,952.45
5. Step 5: Solve for x
   x = 1,567,952.45/1,426.20
6. Step 6: Final answer
   x = 1,099.39