Finding the Fourth Proportional to 2,646.26, 3,969.30 and 797.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,646.26 : 3,969.30 = 797.30 : x
2. Step 2: Convert to fraction form
   2,646.26/3,969.30 = 797.30/x
3. Step 3: Cross multiply
   2,646.26x = 3,969.30 × 797.30
4. Step 4: Simplify right side
   2,646.26x = 3,164,722.89
5. Step 5: Solve for x
   x = 3,164,722.89/2,646.26
6. Step 6: Final answer
   x = 1,195.92