Finding the Fourth Proportional to 2,648.67, 3,971.71 and 799.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.67 : 3,971.71 = 799.44 : x
2. Step 2: Convert to fraction form
   2,648.67/3,971.71 = 799.44/x
3. Step 3: Cross multiply
   2,648.67x = 3,971.71 × 799.44
4. Step 4: Simplify right side
   2,648.67x = 3,175,143.84
5. Step 5: Solve for x
   x = 3,175,143.84/2,648.67
6. Step 6: Final answer
   x = 1,198.77