Finding the Fourth Proportional to 3,761.89, 5,644.78 and 2,730.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,761.89 : 5,644.78 = 2,730.40 : x
2. Step 2: Convert to fraction form
   3,761.89/5,644.78 = 2,730.40/x
3. Step 3: Cross multiply
   3,761.89x = 5,644.78 × 2,730.40
4. Step 4: Simplify right side
   3,761.89x = 15,412,507.31
5. Step 5: Solve for x
   x = 15,412,507.31/3,761.89
6. Step 6: Final answer
   x = 4,097.01