Finding the Fourth Proportional to 2,648.88, 3,973.16 and 799.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.88 : 3,973.16 = 799.96 : x
2. Step 2: Convert to fraction form
   2,648.88/3,973.16 = 799.96/x
3. Step 3: Cross multiply
   2,648.88x = 3,973.16 × 799.96
4. Step 4: Simplify right side
   2,648.88x = 3,178,369.07
5. Step 5: Solve for x
   x = 3,178,369.07/2,648.88
6. Step 6: Final answer
   x = 1,199.89