Finding the Fourth Proportional to 2,384.34, 3,287.84 and 1,639.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,384.34 : 3,287.84 = 1,639.38 : x
2. Step 2: Convert to fraction form
   2,384.34/3,287.84 = 1,639.38/x
3. Step 3: Cross multiply
   2,384.34x = 3,287.84 × 1,639.38
4. Step 4: Simplify right side
   2,384.34x = 5,390,019.14
5. Step 5: Solve for x
   x = 5,390,019.14/2,384.34
6. Step 6: Final answer
   x = 2,260.59