Finding the Fourth Proportional to 1,019.67, 1,518.71 and 1,007.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.67 : 1,518.71 = 1,007.52 : x
2. Step 2: Convert to fraction form
   1,019.67/1,518.71 = 1,007.52/x
3. Step 3: Cross multiply
   1,019.67x = 1,518.71 × 1,007.52
4. Step 4: Simplify right side
   1,019.67x = 1,530,125.66
5. Step 5: Solve for x
   x = 1,530,125.66/1,019.67
6. Step 6: Final answer
   x = 1,500.61