Finding the Fourth Proportional to 2,581.36, 3,873.91 and 938.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.36 : 3,873.91 = 938.03 : x
2. Step 2: Convert to fraction form
   2,581.36/3,873.91 = 938.03/x
3. Step 3: Cross multiply
   2,581.36x = 3,873.91 × 938.03
4. Step 4: Simplify right side
   2,581.36x = 3,633,843.80
5. Step 5: Solve for x
   x = 3,633,843.80/2,581.36
6. Step 6: Final answer
   x = 1,407.72