Finding the Fourth Proportional to 1,119.89, 1,545.46 and 622.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,119.89 : 1,545.46 = 622.56 : x
2. Step 2: Convert to fraction form
   1,119.89/1,545.46 = 622.56/x
3. Step 3: Cross multiply
   1,119.89x = 1,545.46 × 622.56
4. Step 4: Simplify right side
   1,119.89x = 962,141.58
5. Step 5: Solve for x
   x = 962,141.58/1,119.89
6. Step 6: Final answer
   x = 859.14