Finding the Fourth Proportional to 1,238.31, 1,709.43 and 796.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.31 : 1,709.43 = 796.43 : x
2. Step 2: Convert to fraction form
   1,238.31/1,709.43 = 796.43/x
3. Step 3: Cross multiply
   1,238.31x = 1,709.43 × 796.43
4. Step 4: Simplify right side
   1,238.31x = 1,361,444.86
5. Step 5: Solve for x
   x = 1,361,444.86/1,238.31
6. Step 6: Final answer
   x = 1,099.44