Finding the Fourth Proportional to 1,123.51, 1,550.25 and 626.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.51 : 1,550.25 = 626.08 : x
2. Step 2: Convert to fraction form
   1,123.51/1,550.25 = 626.08/x
3. Step 3: Cross multiply
   1,123.51x = 1,550.25 × 626.08
4. Step 4: Simplify right side
   1,123.51x = 970,576.64
5. Step 5: Solve for x
   x = 970,576.64/1,123.51
6. Step 6: Final answer
   x = 863.88