Finding the Fourth Proportional to 1,434.43, 1,979.60 and 805.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.43 : 1,979.60 = 805.01 : x
2. Step 2: Convert to fraction form
   1,434.43/1,979.60 = 805.01/x
3. Step 3: Cross multiply
   1,434.43x = 1,979.60 × 805.01
4. Step 4: Simplify right side
   1,434.43x = 1,593,594.32
5. Step 5: Solve for x
   x = 1,593,594.32/1,434.43
6. Step 6: Final answer
   x = 1,110.96