Finding the Fourth Proportional to 1,434.76, 1,979.89 and 805.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.76 : 1,979.89 = 805.29 : x
2. Step 2: Convert to fraction form
   1,434.76/1,979.89 = 805.29/x
3. Step 3: Cross multiply
   1,434.76x = 1,979.89 × 805.29
4. Step 4: Simplify right side
   1,434.76x = 1,594,391.85
5. Step 5: Solve for x
   x = 1,594,391.85/1,434.76
6. Step 6: Final answer
   x = 1,111.26