Finding the Fourth Proportional to 3,782.10, 5,219.19 and 2,103.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,782.10 : 5,219.19 = 2,103.57 : x
2. Step 2: Convert to fraction form
   3,782.10/5,219.19 = 2,103.57/x
3. Step 3: Cross multiply
   3,782.10x = 5,219.19 × 2,103.57
4. Step 4: Simplify right side
   3,782.10x = 10,978,931.51
5. Step 5: Solve for x
   x = 10,978,931.51/3,782.10
6. Step 6: Final answer
   x = 2,902.87