Finding the Fourth Proportional to 2,648.07, 3,972.15 and 799.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.07 : 3,972.15 = 799.23 : x
2. Step 2: Convert to fraction form
   2,648.07/3,972.15 = 799.23/x
3. Step 3: Cross multiply
   2,648.07x = 3,972.15 × 799.23
4. Step 4: Simplify right side
   2,648.07x = 3,174,661.44
5. Step 5: Solve for x
   x = 3,174,661.44/2,648.07
6. Step 6: Final answer
   x = 1,198.86