Finding the Fourth Proportional to 1,146.39, 1,582.02 and 622.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.39 : 1,582.02 = 622.42 : x
2. Step 2: Convert to fraction form
   1,146.39/1,582.02 = 622.42/x
3. Step 3: Cross multiply
   1,146.39x = 1,582.02 × 622.42
4. Step 4: Simplify right side
   1,146.39x = 984,680.89
5. Step 5: Solve for x
   x = 984,680.89/1,146.39
6. Step 6: Final answer
   x = 858.94