Finding the Fourth Proportional to 1,385.73, 1,912.31 and 796.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.73 : 1,912.31 = 796.17 : x
2. Step 2: Convert to fraction form
   1,385.73/1,912.31 = 796.17/x
3. Step 3: Cross multiply
   1,385.73x = 1,912.31 × 796.17
4. Step 4: Simplify right side
   1,385.73x = 1,522,519.87
5. Step 5: Solve for x
   x = 1,522,519.87/1,385.73
6. Step 6: Final answer
   x = 1,098.71