Finding the Fourth Proportional to 1,434.49, 1,979.43 and 804.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.49 : 1,979.43 = 804.89 : x
2. Step 2: Convert to fraction form
   1,434.49/1,979.43 = 804.89/x
3. Step 3: Cross multiply
   1,434.49x = 1,979.43 × 804.89
4. Step 4: Simplify right side
   1,434.49x = 1,593,213.52
5. Step 5: Solve for x
   x = 1,593,213.52/1,434.49
6. Step 6: Final answer
   x = 1,110.65