Finding the Fourth Proportional to 3,781.98, 5,219.22 and 2,103.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,781.98 : 5,219.22 = 2,103.45 : x
2. Step 2: Convert to fraction form
   3,781.98/5,219.22 = 2,103.45/x
3. Step 3: Cross multiply
   3,781.98x = 5,219.22 × 2,103.45
4. Step 4: Simplify right side
   3,781.98x = 10,978,368.31
5. Step 5: Solve for x
   x = 10,978,368.31/3,781.98
6. Step 6: Final answer
   x = 2,902.81