Finding the Fourth Proportional to 3,375.58, 5,071.89 and 2,143.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,375.58 : 5,071.89 = 2,143.57 : x
2. Step 2: Convert to fraction form
   3,375.58/5,071.89 = 2,143.57/x
3. Step 3: Cross multiply
   3,375.58x = 5,071.89 × 2,143.57
4. Step 4: Simplify right side
   3,375.58x = 10,871,951.25
5. Step 5: Solve for x
   x = 10,871,951.25/3,375.58
6. Step 6: Final answer
   x = 3,220.77