Finding the Fourth Proportional to 2,183.58, 3,007.60 and 1,678.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,183.58 : 3,007.60 = 1,678.47 : x
2. Step 2: Convert to fraction form
   2,183.58/3,007.60 = 1,678.47/x
3. Step 3: Cross multiply
   2,183.58x = 3,007.60 × 1,678.47
4. Step 4: Simplify right side
   2,183.58x = 5,048,142.94
5. Step 5: Solve for x
   x = 5,048,142.94/2,183.58
6. Step 6: Final answer
   x = 2,311.87