Finding the Fourth Proportional to 2,648.60, 3,973.00 and 799.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.60 : 3,973.00 = 799.71 : x
2. Step 2: Convert to fraction form
   2,648.60/3,973.00 = 799.71/x
3. Step 3: Cross multiply
   2,648.60x = 3,973.00 × 799.71
4. Step 4: Simplify right side
   2,648.60x = 3,177,243.83
5. Step 5: Solve for x
   x = 3,177,243.83/2,648.60
6. Step 6: Final answer
   x = 1,199.60