Finding the Fourth Proportional to 2,181.72, 3,264.39 and 1,711.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.72 : 3,264.39 = 1,711.53 : x
2. Step 2: Convert to fraction form
   2,181.72/3,264.39 = 1,711.53/x
3. Step 3: Cross multiply
   2,181.72x = 3,264.39 × 1,711.53
4. Step 4: Simplify right side
   2,181.72x = 5,587,101.42
5. Step 5: Solve for x
   x = 5,587,101.42/2,181.72
6. Step 6: Final answer
   x = 2,560.87