Finding the Fourth Proportional to 3,781.98, 5,218.85 and 2,103.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,781.98 : 5,218.85 = 2,103.31 : x
2. Step 2: Convert to fraction form
   3,781.98/5,218.85 = 2,103.31/x
3. Step 3: Cross multiply
   3,781.98x = 5,218.85 × 2,103.31
4. Step 4: Simplify right side
   3,781.98x = 10,976,851.60
5. Step 5: Solve for x
   x = 10,976,851.60/3,781.98
6. Step 6: Final answer
   x = 2,902.41