Finding the Fourth Proportional to 1,393.62, 1,922.97 and 804.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.62 : 1,922.97 = 804.07 : x
2. Step 2: Convert to fraction form
   1,393.62/1,922.97 = 804.07/x
3. Step 3: Cross multiply
   1,393.62x = 1,922.97 × 804.07
4. Step 4: Simplify right side
   1,393.62x = 1,546,202.49
5. Step 5: Solve for x
   x = 1,546,202.49/1,393.62
6. Step 6: Final answer
   x = 1,109.49