Finding the Fourth Proportional to 1,626.72, 2,243.66 and 1,028.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,626.72 : 2,243.66 = 1,028.32 : x
2. Step 2: Convert to fraction form
   1,626.72/2,243.66 = 1,028.32/x
3. Step 3: Cross multiply
   1,626.72x = 2,243.66 × 1,028.32
4. Step 4: Simplify right side
   1,626.72x = 2,307,200.45
5. Step 5: Solve for x
   x = 2,307,200.45/1,626.72
6. Step 6: Final answer
   x = 1,418.31