Finding the Fourth Proportional to 1,442.24, 1,990.38 and 804.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.24 : 1,990.38 = 804.29 : x
2. Step 2: Convert to fraction form
   1,442.24/1,990.38 = 804.29/x
3. Step 3: Cross multiply
   1,442.24x = 1,990.38 × 804.29
4. Step 4: Simplify right side
   1,442.24x = 1,600,832.78
5. Step 5: Solve for x
   x = 1,600,832.78/1,442.24
6. Step 6: Final answer
   x = 1,109.97