Finding the Fourth Proportional to 1,123.97, 1,551.12 and 626.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.97 : 1,551.12 = 626.69 : x
2. Step 2: Convert to fraction form
   1,123.97/1,551.12 = 626.69/x
3. Step 3: Cross multiply
   1,123.97x = 1,551.12 × 626.69
4. Step 4: Simplify right side
   1,123.97x = 972,072.92
5. Step 5: Solve for x
   x = 972,072.92/1,123.97
6. Step 6: Final answer
   x = 864.86