Finding the Fourth Proportional to 2,013.97, 3,019.86 and 626.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.97 : 3,019.86 = 626.71 : x
2. Step 2: Convert to fraction form
   2,013.97/3,019.86 = 626.71/x
3. Step 3: Cross multiply
   2,013.97x = 3,019.86 × 626.71
4. Step 4: Simplify right side
   2,013.97x = 1,892,576.46
5. Step 5: Solve for x
   x = 1,892,576.46/2,013.97
6. Step 6: Final answer
   x = 939.72