Finding the Fourth Proportional to 1,019.08, 1,525.89 and 671.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.08 : 1,525.89 = 671.49 : x
2. Step 2: Convert to fraction form
   1,019.08/1,525.89 = 671.49/x
3. Step 3: Cross multiply
   1,019.08x = 1,525.89 × 671.49
4. Step 4: Simplify right side
   1,019.08x = 1,024,618.62
5. Step 5: Solve for x
   x = 1,024,618.62/1,019.08
6. Step 6: Final answer
   x = 1,005.43