Finding the Fourth Proportional to 1,123.35, 1,550.23 and 626.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.35 : 1,550.23 = 626.01 : x
2. Step 2: Convert to fraction form
   1,123.35/1,550.23 = 626.01/x
3. Step 3: Cross multiply
   1,123.35x = 1,550.23 × 626.01
4. Step 4: Simplify right side
   1,123.35x = 970,461.79
5. Step 5: Solve for x
   x = 970,461.79/1,123.35
6. Step 6: Final answer
   x = 863.90