Finding the Fourth Proportional to 3,872.45, 5,343.86 and 2,104.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,872.45 : 5,343.86 = 2,104.05 : x
2. Step 2: Convert to fraction form
   3,872.45/5,343.86 = 2,104.05/x
3. Step 3: Cross multiply
   3,872.45x = 5,343.86 × 2,104.05
4. Step 4: Simplify right side
   3,872.45x = 11,243,753.89
5. Step 5: Solve for x
   x = 11,243,753.89/3,872.45
6. Step 6: Final answer
   x = 2,903.52