Finding the Fourth Proportional to 1,120.03, 1,545.61 and 622.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.03 : 1,545.61 = 622.69 : x
2. Step 2: Convert to fraction form
   1,120.03/1,545.61 = 622.69/x
3. Step 3: Cross multiply
   1,120.03x = 1,545.61 × 622.69
4. Step 4: Simplify right side
   1,120.03x = 962,435.89
5. Step 5: Solve for x
   x = 962,435.89/1,120.03
6. Step 6: Final answer
   x = 859.29