Finding the Fourth Proportional to 1,356.62, 1,871.61 and 796.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.62 : 1,871.61 = 796.87 : x
2. Step 2: Convert to fraction form
   1,356.62/1,871.61 = 796.87/x
3. Step 3: Cross multiply
   1,356.62x = 1,871.61 × 796.87
4. Step 4: Simplify right side
   1,356.62x = 1,491,429.21
5. Step 5: Solve for x
   x = 1,491,429.21/1,356.62
6. Step 6: Final answer
   x = 1,099.38