Finding the Fourth Proportional to 1,426.98, 1,969.20 and 797.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.98 : 1,969.20 = 797.51 : x
2. Step 2: Convert to fraction form
   1,426.98/1,969.20 = 797.51/x
3. Step 3: Cross multiply
   1,426.98x = 1,969.20 × 797.51
4. Step 4: Simplify right side
   1,426.98x = 1,570,458.69
5. Step 5: Solve for x
   x = 1,570,458.69/1,426.98
6. Step 6: Final answer
   x = 1,100.55