Finding the Fourth Proportional to 2,839.72, 3,918.18 and 1,644.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,839.72 : 3,918.18 = 1,644.52 : x
2. Step 2: Convert to fraction form
   2,839.72/3,918.18 = 1,644.52/x
3. Step 3: Cross multiply
   2,839.72x = 3,918.18 × 1,644.52
4. Step 4: Simplify right side
   2,839.72x = 6,443,525.37
5. Step 5: Solve for x
   x = 6,443,525.37/2,839.72
6. Step 6: Final answer
   x = 2,269.07