Finding the Fourth Proportional to 1,635.57, 2,257.02 and 889.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,635.57 : 2,257.02 = 889.52 : x
2. Step 2: Convert to fraction form
   1,635.57/2,257.02 = 889.52/x
3. Step 3: Cross multiply
   1,635.57x = 2,257.02 × 889.52
4. Step 4: Simplify right side
   1,635.57x = 2,007,653.15
5. Step 5: Solve for x
   x = 2,007,653.15/1,635.57
6. Step 6: Final answer
   x = 1,227.49