Finding the Fourth Proportional to 1,333.64, 1,839.94 and 809.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.64 : 1,839.94 = 809.48 : x
2. Step 2: Convert to fraction form
   1,333.64/1,839.94 = 809.48/x
3. Step 3: Cross multiply
   1,333.64x = 1,839.94 × 809.48
4. Step 4: Simplify right side
   1,333.64x = 1,489,394.63
5. Step 5: Solve for x
   x = 1,489,394.63/1,333.64
6. Step 6: Final answer
   x = 1,116.79