Finding the Fourth Proportional to 3,782.72, 5,219.70 and 2,103.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,782.72 : 5,219.70 = 2,103.70 : x
2. Step 2: Convert to fraction form
   3,782.72/5,219.70 = 2,103.70/x
3. Step 3: Cross multiply
   3,782.72x = 5,219.70 × 2,103.70
4. Step 4: Simplify right side
   3,782.72x = 10,980,682.89
5. Step 5: Solve for x
   x = 10,980,682.89/3,782.72
6. Step 6: Final answer
   x = 2,902.85