Finding the Fourth Proportional to 1,434.27, 1,979.23 and 804.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.27 : 1,979.23 = 804.79 : x
2. Step 2: Convert to fraction form
   1,434.27/1,979.23 = 804.79/x
3. Step 3: Cross multiply
   1,434.27x = 1,979.23 × 804.79
4. Step 4: Simplify right side
   1,434.27x = 1,592,864.51
5. Step 5: Solve for x
   x = 1,592,864.51/1,434.27
6. Step 6: Final answer
   x = 1,110.58