Finding the Fourth Proportional to 1,018.86, 1,527.24 and 579.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.86 : 1,527.24 = 579.54 : x
2. Step 2: Convert to fraction form
   1,018.86/1,527.24 = 579.54/x
3. Step 3: Cross multiply
   1,018.86x = 1,527.24 × 579.54
4. Step 4: Simplify right side
   1,018.86x = 885,096.67
5. Step 5: Solve for x
   x = 885,096.67/1,018.86
6. Step 6: Final answer
   x = 868.71