Finding the Fourth Proportional to 1,434.29, 1,979.40 and 805.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.29 : 1,979.40 = 805.02 : x
2. Step 2: Convert to fraction form
   1,434.29/1,979.40 = 805.02/x
3. Step 3: Cross multiply
   1,434.29x = 1,979.40 × 805.02
4. Step 4: Simplify right side
   1,434.29x = 1,593,456.59
5. Step 5: Solve for x
   x = 1,593,456.59/1,434.29
6. Step 6: Final answer
   x = 1,110.97