Finding the Fourth Proportional to 3,447.72, 4,755.89 and 2,120.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,447.72 : 4,755.89 = 2,120.49 : x
2. Step 2: Convert to fraction form
   3,447.72/4,755.89 = 2,120.49/x
3. Step 3: Cross multiply
   3,447.72x = 4,755.89 × 2,120.49
4. Step 4: Simplify right side
   3,447.72x = 10,084,806.58
5. Step 5: Solve for x
   x = 10,084,806.58/3,447.72
6. Step 6: Final answer
   x = 2,925.07