Finding the Fourth Proportional to 1,386.10, 1,912.42 and 796.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386.10 : 1,912.42 = 796.52 : x
2. Step 2: Convert to fraction form
   1,386.10/1,912.42 = 796.52/x
3. Step 3: Cross multiply
   1,386.10x = 1,912.42 × 796.52
4. Step 4: Simplify right side
   1,386.10x = 1,523,280.78
5. Step 5: Solve for x
   x = 1,523,280.78/1,386.10
6. Step 6: Final answer
   x = 1,098.97