Finding the Fourth Proportional to 1,119.47, 1,544.72 and 622.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,119.47 : 1,544.72 = 622.03 : x
2. Step 2: Convert to fraction form
   1,119.47/1,544.72 = 622.03/x
3. Step 3: Cross multiply
   1,119.47x = 1,544.72 × 622.03
4. Step 4: Simplify right side
   1,119.47x = 960,861.60
5. Step 5: Solve for x
   x = 960,861.60/1,119.47
6. Step 6: Final answer
   x = 858.32