Finding the Fourth Proportional to 1,434.06, 1,979.04 and 804.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.06 : 1,979.04 = 804.57 : x
2. Step 2: Convert to fraction form
   1,434.06/1,979.04 = 804.57/x
3. Step 3: Cross multiply
   1,434.06x = 1,979.04 × 804.57
4. Step 4: Simplify right side
   1,434.06x = 1,592,276.21
5. Step 5: Solve for x
   x = 1,592,276.21/1,434.06
6. Step 6: Final answer
   x = 1,110.33