Finding the Fourth Proportional to 3,782.05, 5,218.73 and 2,103.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,782.05 : 5,218.73 = 2,103.12 : x
2. Step 2: Convert to fraction form
   3,782.05/5,218.73 = 2,103.12/x
3. Step 3: Cross multiply
   3,782.05x = 5,218.73 × 2,103.12
4. Step 4: Simplify right side
   3,782.05x = 10,975,612.81
5. Step 5: Solve for x
   x = 10,975,612.81/3,782.05
6. Step 6: Final answer
   x = 2,902.03