Finding the Fourth Proportional to 2,145.53, 3,217.42 and 1,452.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.53 : 3,217.42 = 1,452.39 : x
2. Step 2: Convert to fraction form
   2,145.53/3,217.42 = 1,452.39/x
3. Step 3: Cross multiply
   2,145.53x = 3,217.42 × 1,452.39
4. Step 4: Simplify right side
   2,145.53x = 4,672,956.48
5. Step 5: Solve for x
   x = 4,672,956.48/2,145.53
6. Step 6: Final answer
   x = 2,177.99