Finding the Fourth Proportional to 2,826.88, 3,897.71 and 2,671

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.88 : 3,897.71 = 2,671 : x
2. Step 2: Convert to fraction form
   2,826.88/3,897.71 = 2,671/x
3. Step 3: Cross multiply
   2,826.88x = 3,897.71 × 2,671
4. Step 4: Simplify right side
   2,826.88x = 10,410,770.06
5. Step 5: Solve for x
   x = 10,410,770.06/2,826.88
6. Step 6: Final answer
   x = 3,682.78