Finding the Fourth Proportional to 1,064.86, 1,469.37 and 622.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.86 : 1,469.37 = 622.69 : x
2. Step 2: Convert to fraction form
   1,064.86/1,469.37 = 622.69/x
3. Step 3: Cross multiply
   1,064.86x = 1,469.37 × 622.69
4. Step 4: Simplify right side
   1,064.86x = 914,962.01
5. Step 5: Solve for x
   x = 914,962.01/1,064.86
6. Step 6: Final answer
   x = 859.23