Finding the Fourth Proportional to 3,677.12, 5,073.76 and 2,105.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,677.12 : 5,073.76 = 2,105.28 : x
2. Step 2: Convert to fraction form
   3,677.12/5,073.76 = 2,105.28/x
3. Step 3: Cross multiply
   3,677.12x = 5,073.76 × 2,105.28
4. Step 4: Simplify right side
   3,677.12x = 10,681,685.45
5. Step 5: Solve for x
   x = 10,681,685.45/3,677.12
6. Step 6: Final answer
   x = 2,904.91