Finding the Fourth Proportional to 1,120.04, 1,545.69 and 622.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.04 : 1,545.69 = 622.72 : x
2. Step 2: Convert to fraction form
   1,120.04/1,545.69 = 622.72/x
3. Step 3: Cross multiply
   1,120.04x = 1,545.69 × 622.72
4. Step 4: Simplify right side
   1,120.04x = 962,521.23
5. Step 5: Solve for x
   x = 962,521.23/1,120.04
6. Step 6: Final answer
   x = 859.37