Finding the Fourth Proportional to 1,393.56, 1,922.82 and 804.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.56 : 1,922.82 = 804.06 : x
2. Step 2: Convert to fraction form
   1,393.56/1,922.82 = 804.06/x
3. Step 3: Cross multiply
   1,393.56x = 1,922.82 × 804.06
4. Step 4: Simplify right side
   1,393.56x = 1,546,062.65
5. Step 5: Solve for x
   x = 1,546,062.65/1,393.56
6. Step 6: Final answer
   x = 1,109.43