Finding the Fourth Proportional to 1,064.95, 1,469.54 and 622.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.95 : 1,469.54 = 622.69 : x
2. Step 2: Convert to fraction form
   1,064.95/1,469.54 = 622.69/x
3. Step 3: Cross multiply
   1,064.95x = 1,469.54 × 622.69
4. Step 4: Simplify right side
   1,064.95x = 915,065.75
5. Step 5: Solve for x
   x = 915,065.75/1,064.95
6. Step 6: Final answer
   x = 859.26