Finding the Fourth Proportional to 1,123.41, 1,550.26 and 626.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.41 : 1,550.26 = 626.06 : x
2. Step 2: Convert to fraction form
   1,123.41/1,550.26 = 626.06/x
3. Step 3: Cross multiply
   1,123.41x = 1,550.26 × 626.06
4. Step 4: Simplify right side
   1,123.41x = 970,555.78
5. Step 5: Solve for x
   x = 970,555.78/1,123.41
6. Step 6: Final answer
   x = 863.94