Finding the Fourth Proportional to 2,012.69, 3,019.31 and 626.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.69 : 3,019.31 = 626.24 : x
2. Step 2: Convert to fraction form
   2,012.69/3,019.31 = 626.24/x
3. Step 3: Cross multiply
   2,012.69x = 3,019.31 × 626.24
4. Step 4: Simplify right side
   2,012.69x = 1,890,812.69
5. Step 5: Solve for x
   x = 1,890,812.69/2,012.69
6. Step 6: Final answer
   x = 939.45