Finding the Fourth Proportional to 2,018.81, 3,029.43 and 864.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.81 : 3,029.43 = 864.56 : x
2. Step 2: Convert to fraction form
   2,018.81/3,029.43 = 864.56/x
3. Step 3: Cross multiply
   2,018.81x = 3,029.43 × 864.56
4. Step 4: Simplify right side
   2,018.81x = 2,619,134.82
5. Step 5: Solve for x
   x = 2,619,134.82/2,018.81
6. Step 6: Final answer
   x = 1,297.36