Finding the Fourth Proportional to 1,393.32, 1,922.98 and 804.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.32 : 1,922.98 = 804.20 : x
2. Step 2: Convert to fraction form
   1,393.32/1,922.98 = 804.20/x
3. Step 3: Cross multiply
   1,393.32x = 1,922.98 × 804.20
4. Step 4: Simplify right side
   1,393.32x = 1,546,460.52
5. Step 5: Solve for x
   x = 1,546,460.52/1,393.32
6. Step 6: Final answer
   x = 1,109.91