Finding the Fourth Proportional to 2,018.24, 3,024.93 and 861.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.24 : 3,024.93 = 861.56 : x
2. Step 2: Convert to fraction form
   2,018.24/3,024.93 = 861.56/x
3. Step 3: Cross multiply
   2,018.24x = 3,024.93 × 861.56
4. Step 4: Simplify right side
   2,018.24x = 2,606,158.69
5. Step 5: Solve for x
   x = 2,606,158.69/2,018.24
6. Step 6: Final answer
   x = 1,291.30