Finding the Fourth Proportional to 1,635.47, 2,256.89 and 889.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,635.47 : 2,256.89 = 889.41 : x
2. Step 2: Convert to fraction form
   1,635.47/2,256.89 = 889.41/x
3. Step 3: Cross multiply
   1,635.47x = 2,256.89 × 889.41
4. Step 4: Simplify right side
   1,635.47x = 2,007,300.53
5. Step 5: Solve for x
   x = 2,007,300.53/1,635.47
6. Step 6: Final answer
   x = 1,227.35