Finding the Fourth Proportional to 3,782.61, 5,219.51 and 2,103.68

Step by Step Solution

1. Step 1: Write the proportion equation
   3,782.61 : 5,219.51 = 2,103.68 : x
2. Step 2: Convert to fraction form
   3,782.61/5,219.51 = 2,103.68/x
3. Step 3: Cross multiply
   3,782.61x = 5,219.51 × 2,103.68
4. Step 4: Simplify right side
   3,782.61x = 10,980,181.33
5. Step 5: Solve for x
   x = 10,980,181.33/3,782.61
6. Step 6: Final answer
   x = 2,902.81