Finding the Fourth Proportional to 2,308.52, 3,181.18 and 1,644.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.52 : 3,181.18 = 1,644.20 : x
2. Step 2: Convert to fraction form
   2,308.52/3,181.18 = 1,644.20/x
3. Step 3: Cross multiply
   2,308.52x = 3,181.18 × 1,644.20
4. Step 4: Simplify right side
   2,308.52x = 5,230,496.16
5. Step 5: Solve for x
   x = 5,230,496.16/2,308.52
6. Step 6: Final answer
   x = 2,265.74