Finding the Fourth Proportional to 1,123.83, 1,550.73 and 626.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.83 : 1,550.73 = 626.49 : x
2. Step 2: Convert to fraction form
   1,123.83/1,550.73 = 626.49/x
3. Step 3: Cross multiply
   1,123.83x = 1,550.73 × 626.49
4. Step 4: Simplify right side
   1,123.83x = 971,516.84
5. Step 5: Solve for x
   x = 971,516.84/1,123.83
6. Step 6: Final answer
   x = 864.47