Finding the Fourth Proportional to 2,116.09, 3,172.04 and 1,003.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.09 : 3,172.04 = 1,003.55 : x
2. Step 2: Convert to fraction form
   2,116.09/3,172.04 = 1,003.55/x
3. Step 3: Cross multiply
   2,116.09x = 3,172.04 × 1,003.55
4. Step 4: Simplify right side
   2,116.09x = 3,183,295.72
5. Step 5: Solve for x
   x = 3,183,295.72/2,116.09
6. Step 6: Final answer
   x = 1,504.33