Finding the Fourth Proportional to 1,644.48, 2,466.78 and 1,123.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.48 : 2,466.78 = 1,123.25 : x
2. Step 2: Convert to fraction form
   1,644.48/2,466.78 = 1,123.25/x
3. Step 3: Cross multiply
   1,644.48x = 2,466.78 × 1,123.25
4. Step 4: Simplify right side
   1,644.48x = 2,770,798.30
5. Step 5: Solve for x
   x = 2,770,798.30/1,644.48
6. Step 6: Final answer
   x = 1,684.91