Finding the Fourth Proportional to 1,393.83, 1,923.75 and 804.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.83 : 1,923.75 = 804.69 : x
2. Step 2: Convert to fraction form
   1,393.83/1,923.75 = 804.69/x
3. Step 3: Cross multiply
   1,393.83x = 1,923.75 × 804.69
4. Step 4: Simplify right side
   1,393.83x = 1,548,022.39
5. Step 5: Solve for x
   x = 1,548,022.39/1,393.83
6. Step 6: Final answer
   x = 1,110.62