Finding the Fourth Proportional to 1,238.58, 1,708.53 and 796.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.58 : 1,708.53 = 796.73 : x
2. Step 2: Convert to fraction form
   1,238.58/1,708.53 = 796.73/x
3. Step 3: Cross multiply
   1,238.58x = 1,708.53 × 796.73
4. Step 4: Simplify right side
   1,238.58x = 1,361,228.56
5. Step 5: Solve for x
   x = 1,361,228.56/1,238.58
6. Step 6: Final answer
   x = 1,099.02