Finding the Fourth Proportional to 4,938.89, 7,411.25 and 1,821.09

Step by Step Solution

1. Step 1: Write the proportion equation
   4,938.89 : 7,411.25 = 1,821.09 : x
2. Step 2: Convert to fraction form
   4,938.89/7,411.25 = 1,821.09/x
3. Step 3: Cross multiply
   4,938.89x = 7,411.25 × 1,821.09
4. Step 4: Simplify right side
   4,938.89x = 13,496,544.16
5. Step 5: Solve for x
   x = 13,496,544.16/4,938.89
6. Step 6: Final answer
   x = 2,732.71