Finding the Fourth Proportional to 2,626.31, 3,939.88 and 983.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,626.31 : 3,939.88 = 983.09 : x
2. Step 2: Convert to fraction form
   2,626.31/3,939.88 = 983.09/x
3. Step 3: Cross multiply
   2,626.31x = 3,939.88 × 983.09
4. Step 4: Simplify right side
   2,626.31x = 3,873,264.02
5. Step 5: Solve for x
   x = 3,873,264.02/2,626.31
6. Step 6: Final answer
   x = 1,474.79