Finding the Fourth Proportional to 1,019.87, 1,530.38 and 630.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.87 : 1,530.38 = 630.82 : x
2. Step 2: Convert to fraction form
   1,019.87/1,530.38 = 630.82/x
3. Step 3: Cross multiply
   1,019.87x = 1,530.38 × 630.82
4. Step 4: Simplify right side
   1,019.87x = 965,394.31
5. Step 5: Solve for x
   x = 965,394.31/1,019.87
6. Step 6: Final answer
   x = 946.59