Finding the Fourth Proportional to 2,607.82, 3,907.17 and 2,171.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.82 : 3,907.17 = 2,171.88 : x
2. Step 2: Convert to fraction form
   2,607.82/3,907.17 = 2,171.88/x
3. Step 3: Cross multiply
   2,607.82x = 3,907.17 × 2,171.88
4. Step 4: Simplify right side
   2,607.82x = 8,485,912.52
5. Step 5: Solve for x
   x = 8,485,912.52/2,607.82
6. Step 6: Final answer
   x = 3,254.02