Finding the Fourth Proportional to 2,007.72, 2,995.83 and 1,800

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.72 : 2,995.83 = 1,800 : x
2. Step 2: Convert to fraction form
   2,007.72/2,995.83 = 1,800/x
3. Step 3: Cross multiply
   2,007.72x = 2,995.83 × 1,800
4. Step 4: Simplify right side
   2,007.72x = 5,392,494
5. Step 5: Solve for x
   x = 5,392,494/2,007.72
6. Step 6: Final answer
   x = 2,685.88