Finding the Fourth Proportional to 2,018.24, 3,027.42 and 557.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.24 : 3,027.42 = 557.50 : x
2. Step 2: Convert to fraction form
   2,018.24/3,027.42 = 557.50/x
3. Step 3: Cross multiply
   2,018.24x = 3,027.42 × 557.50
4. Step 4: Simplify right side
   2,018.24x = 1,687,786.65
5. Step 5: Solve for x
   x = 1,687,786.65/2,018.24
6. Step 6: Final answer
   x = 836.27