Finding the Fourth Proportional to 3,781.27, 5,218.29 and 2,103.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,781.27 : 5,218.29 = 2,103.15 : x
2. Step 2: Convert to fraction form
   3,781.27/5,218.29 = 2,103.15/x
3. Step 3: Cross multiply
   3,781.27x = 5,218.29 × 2,103.15
4. Step 4: Simplify right side
   3,781.27x = 10,974,846.61
5. Step 5: Solve for x
   x = 10,974,846.61/3,781.27
6. Step 6: Final answer
   x = 2,902.42