Finding the Fourth Proportional to 1,123.69, 1,550.45 and 626.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.69 : 1,550.45 = 626.22 : x
2. Step 2: Convert to fraction form
   1,123.69/1,550.45 = 626.22/x
3. Step 3: Cross multiply
   1,123.69x = 1,550.45 × 626.22
4. Step 4: Simplify right side
   1,123.69x = 970,923.06
5. Step 5: Solve for x
   x = 970,923.06/1,123.69
6. Step 6: Final answer
   x = 864.05