Finding the Fourth Proportional to 1,063.88, 1,468.15 and 622.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,063.88 : 1,468.15 = 622.15 : x
2. Step 2: Convert to fraction form
   1,063.88/1,468.15 = 622.15/x
3. Step 3: Cross multiply
   1,063.88x = 1,468.15 × 622.15
4. Step 4: Simplify right side
   1,063.88x = 913,404.30
5. Step 5: Solve for x
   x = 913,404.30/1,063.88
6. Step 6: Final answer
   x = 858.56