Finding the Fourth Proportional to 2,626.81, 3,940.63 and 983.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,626.81 : 3,940.63 = 983.59 : x
2. Step 2: Convert to fraction form
   2,626.81/3,940.63 = 983.59/x
3. Step 3: Cross multiply
   2,626.81x = 3,940.63 × 983.59
4. Step 4: Simplify right side
   2,626.81x = 3,875,964.26
5. Step 5: Solve for x
   x = 3,875,964.26/2,626.81
6. Step 6: Final answer
   x = 1,475.54