Finding the Fourth Proportional to 1,385.81, 1,912.41 and 796.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.81 : 1,912.41 = 796.37 : x
2. Step 2: Convert to fraction form
   1,385.81/1,912.41 = 796.37/x
3. Step 3: Cross multiply
   1,385.81x = 1,912.41 × 796.37
4. Step 4: Simplify right side
   1,385.81x = 1,522,976.39
5. Step 5: Solve for x
   x = 1,522,976.39/1,385.81
6. Step 6: Final answer
   x = 1,098.98