Finding the Fourth Proportional to 3,872.76, 5,340.38 and 2,300.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,872.76 : 5,340.38 = 2,300.56 : x
2. Step 2: Convert to fraction form
   3,872.76/5,340.38 = 2,300.56/x
3. Step 3: Cross multiply
   3,872.76x = 5,340.38 × 2,300.56
4. Step 4: Simplify right side
   3,872.76x = 12,285,864.61
5. Step 5: Solve for x
   x = 12,285,864.61/3,872.76
6. Step 6: Final answer
   x = 3,172.38