Finding the Fourth Proportional to 2,626.69, 3,939.72 and 983.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,626.69 : 3,939.72 = 983.20 : x
2. Step 2: Convert to fraction form
   2,626.69/3,939.72 = 983.20/x
3. Step 3: Cross multiply
   2,626.69x = 3,939.72 × 983.20
4. Step 4: Simplify right side
   2,626.69x = 3,873,532.70
5. Step 5: Solve for x
   x = 3,873,532.70/2,626.69
6. Step 6: Final answer
   x = 1,474.68