Finding the Fourth Proportional to 2,018.72, 3,027.83 and 538.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.72 : 3,027.83 = 538.05 : x
2. Step 2: Convert to fraction form
   2,018.72/3,027.83 = 538.05/x
3. Step 3: Cross multiply
   2,018.72x = 3,027.83 × 538.05
4. Step 4: Simplify right side
   2,018.72x = 1,629,121.24
5. Step 5: Solve for x
   x = 1,629,121.24/2,018.72
6. Step 6: Final answer
   x = 807.01