Finding the Fourth Proportional to 1,386.27, 1,913.02 and 796.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386.27 : 1,913.02 = 796.79 : x
2. Step 2: Convert to fraction form
   1,386.27/1,913.02 = 796.79/x
3. Step 3: Cross multiply
   1,386.27x = 1,913.02 × 796.79
4. Step 4: Simplify right side
   1,386.27x = 1,524,273.21
5. Step 5: Solve for x
   x = 1,524,273.21/1,386.27
6. Step 6: Final answer
   x = 1,099.55