Finding the Fourth Proportional to 1,064.68, 1,469.72 and 622.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.68 : 1,469.72 = 622.51 : x
2. Step 2: Convert to fraction form
   1,064.68/1,469.72 = 622.51/x
3. Step 3: Cross multiply
   1,064.68x = 1,469.72 × 622.51
4. Step 4: Simplify right side
   1,064.68x = 914,915.40
5. Step 5: Solve for x
   x = 914,915.40/1,064.68
6. Step 6: Final answer
   x = 859.33