Finding the Fourth Proportional to 1,636.53, 2,257.01 and 1,105.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636.53 : 2,257.01 = 1,105.27 : x
2. Step 2: Convert to fraction form
   1,636.53/2,257.01 = 1,105.27/x
3. Step 3: Cross multiply
   1,636.53x = 2,257.01 × 1,105.27
4. Step 4: Simplify right side
   1,636.53x = 2,494,594.16
5. Step 5: Solve for x
   x = 2,494,594.16/1,636.53
6. Step 6: Final answer
   x = 1,524.32