Finding the Fourth Proportional to 1,426.88, 1,969.04 and 797.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.88 : 1,969.04 = 797.40 : x
2. Step 2: Convert to fraction form
   1,426.88/1,969.04 = 797.40/x
3. Step 3: Cross multiply
   1,426.88x = 1,969.04 × 797.40
4. Step 4: Simplify right side
   1,426.88x = 1,570,112.50
5. Step 5: Solve for x
   x = 1,570,112.50/1,426.88
6. Step 6: Final answer
   x = 1,100.38