Finding the Fourth Proportional to 3,380.88, 5,076.28 and 2,087.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,380.88 : 5,076.28 = 2,087.76 : x
2. Step 2: Convert to fraction form
   3,380.88/5,076.28 = 2,087.76/x
3. Step 3: Cross multiply
   3,380.88x = 5,076.28 × 2,087.76
4. Step 4: Simplify right side
   3,380.88x = 10,598,054.33
5. Step 5: Solve for x
   x = 10,598,054.33/3,380.88
6. Step 6: Final answer
   x = 3,134.70