Finding the Fourth Proportional to 1,238.16, 1,707.78 and 796.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.16 : 1,707.78 = 796.62 : x
2. Step 2: Convert to fraction form
   1,238.16/1,707.78 = 796.62/x
3. Step 3: Cross multiply
   1,238.16x = 1,707.78 × 796.62
4. Step 4: Simplify right side
   1,238.16x = 1,360,451.70
5. Step 5: Solve for x
   x = 1,360,451.70/1,238.16
6. Step 6: Final answer
   x = 1,098.77