Finding the Fourth Proportional to 1,434.66, 1,979.71 and 805.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.66 : 1,979.71 = 805.06 : x
2. Step 2: Convert to fraction form
   1,434.66/1,979.71 = 805.06/x
3. Step 3: Cross multiply
   1,434.66x = 1,979.71 × 805.06
4. Step 4: Simplify right side
   1,434.66x = 1,593,785.33
5. Step 5: Solve for x
   x = 1,593,785.33/1,434.66
6. Step 6: Final answer
   x = 1,110.92