Finding the Fourth Proportional to 1,393.81, 1,923.57 and 796.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.81 : 1,923.57 = 796.48 : x
2. Step 2: Convert to fraction form
   1,393.81/1,923.57 = 796.48/x
3. Step 3: Cross multiply
   1,393.81x = 1,923.57 × 796.48
4. Step 4: Simplify right side
   1,393.81x = 1,532,080.22
5. Step 5: Solve for x
   x = 1,532,080.22/1,393.81
6. Step 6: Final answer
   x = 1,099.21