Finding the Fourth Proportional to 2,185.71, 3,253.85 and 2,172.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.71 : 3,253.85 = 2,172.74 : x
2. Step 2: Convert to fraction form
   2,185.71/3,253.85 = 2,172.74/x
3. Step 3: Cross multiply
   2,185.71x = 3,253.85 × 2,172.74
4. Step 4: Simplify right side
   2,185.71x = 7,069,770.05
5. Step 5: Solve for x
   x = 7,069,770.05/2,185.71
6. Step 6: Final answer
   x = 3,234.54