Finding the Fourth Proportional to 1,335.28, 1,842.56 and 804.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.28 : 1,842.56 = 804.18 : x
2. Step 2: Convert to fraction form
   1,335.28/1,842.56 = 804.18/x
3. Step 3: Cross multiply
   1,335.28x = 1,842.56 × 804.18
4. Step 4: Simplify right side
   1,335.28x = 1,481,749.90
5. Step 5: Solve for x
   x = 1,481,749.90/1,335.28
6. Step 6: Final answer
   x = 1,109.69