Finding the Fourth Proportional to 1,064.24, 1,468.56 and 622.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.24 : 1,468.56 = 622.09 : x
2. Step 2: Convert to fraction form
   1,064.24/1,468.56 = 622.09/x
3. Step 3: Cross multiply
   1,064.24x = 1,468.56 × 622.09
4. Step 4: Simplify right side
   1,064.24x = 913,576.49
5. Step 5: Solve for x
   x = 913,576.49/1,064.24
6. Step 6: Final answer
   x = 858.43