Finding the Fourth Proportional to 1,386.44, 1,912.82 and 796.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386.44 : 1,912.82 = 796.56 : x
2. Step 2: Convert to fraction form
   1,386.44/1,912.82 = 796.56/x
3. Step 3: Cross multiply
   1,386.44x = 1,912.82 × 796.56
4. Step 4: Simplify right side
   1,386.44x = 1,523,675.90
5. Step 5: Solve for x
   x = 1,523,675.90/1,386.44
6. Step 6: Final answer
   x = 1,098.98