Finding the Fourth Proportional to 1,644.56, 2,469.59 and 1,631.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.56 : 2,469.59 = 1,631.81 : x
2. Step 2: Convert to fraction form
   1,644.56/2,469.59 = 1,631.81/x
3. Step 3: Cross multiply
   1,644.56x = 2,469.59 × 1,631.81
4. Step 4: Simplify right side
   1,644.56x = 4,029,881.15
5. Step 5: Solve for x
   x = 4,029,881.15/1,644.56
6. Step 6: Final answer
   x = 2,450.43