Finding the Fourth Proportional to 2,388.34, 3,298.41 and 1,644.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.34 : 3,298.41 = 1,644.22 : x
2. Step 2: Convert to fraction form
   2,388.34/3,298.41 = 1,644.22/x
3. Step 3: Cross multiply
   2,388.34x = 3,298.41 × 1,644.22
4. Step 4: Simplify right side
   2,388.34x = 5,423,286.98
5. Step 5: Solve for x
   x = 5,423,286.98/2,388.34
6. Step 6: Final answer
   x = 2,270.74