Finding the Fourth Proportional to 1,019.27, 1,529.17 and 434.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.27 : 1,529.17 = 434.29 : x
2. Step 2: Convert to fraction form
   1,019.27/1,529.17 = 434.29/x
3. Step 3: Cross multiply
   1,019.27x = 1,529.17 × 434.29
4. Step 4: Simplify right side
   1,019.27x = 664,104.33
5. Step 5: Solve for x
   x = 664,104.33/1,019.27
6. Step 6: Final answer
   x = 651.55