Finding the Fourth Proportional to 1,065.27, 1,469.59 and 622.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.27 : 1,469.59 = 622.97 : x
2. Step 2: Convert to fraction form
   1,065.27/1,469.59 = 622.97/x
3. Step 3: Cross multiply
   1,065.27x = 1,469.59 × 622.97
4. Step 4: Simplify right side
   1,065.27x = 915,513.88
5. Step 5: Solve for x
   x = 915,513.88/1,065.27
6. Step 6: Final answer
   x = 859.42