Finding the Fourth Proportional to 1,635.87, 2,257.50 and 889.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,635.87 : 2,257.50 = 889.83 : x
2. Step 2: Convert to fraction form
   1,635.87/2,257.50 = 889.83/x
3. Step 3: Cross multiply
   1,635.87x = 2,257.50 × 889.83
4. Step 4: Simplify right side
   1,635.87x = 2,008,786.78
5. Step 5: Solve for x
   x = 2,008,786.78/1,635.87
6. Step 6: Final answer
   x = 1,227.97