Finding the Fourth Proportional to 1,018.56, 1,524.58 and 671.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.56 : 1,524.58 = 671.07 : x
2. Step 2: Convert to fraction form
   1,018.56/1,524.58 = 671.07/x
3. Step 3: Cross multiply
   1,018.56x = 1,524.58 × 671.07
4. Step 4: Simplify right side
   1,018.56x = 1,023,099.90
5. Step 5: Solve for x
   x = 1,023,099.90/1,018.56
6. Step 6: Final answer
   x = 1,004.46