Finding the Fourth Proportional to 1,356.47, 1,871.90 and 796.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.47 : 1,871.90 = 796.83 : x
2. Step 2: Convert to fraction form
   1,356.47/1,871.90 = 796.83/x
3. Step 3: Cross multiply
   1,356.47x = 1,871.90 × 796.83
4. Step 4: Simplify right side
   1,356.47x = 1,491,582.09
5. Step 5: Solve for x
   x = 1,491,582.09/1,356.47
6. Step 6: Final answer
   x = 1,099.61