Finding the Fourth Proportional to 1,064.45, 1,469.01 and 622.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.45 : 1,469.01 = 622.49 : x
2. Step 2: Convert to fraction form
   1,064.45/1,469.01 = 622.49/x
3. Step 3: Cross multiply
   1,064.45x = 1,469.01 × 622.49
4. Step 4: Simplify right side
   1,064.45x = 914,436.69
5. Step 5: Solve for x
   x = 914,436.69/1,064.45
6. Step 6: Final answer
   x = 859.07