Finding the Fourth Proportional to 2,154.72, 3,233.20 and 1,634.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.72 : 3,233.20 = 1,634.57 : x
2. Step 2: Convert to fraction form
   2,154.72/3,233.20 = 1,634.57/x
3. Step 3: Cross multiply
   2,154.72x = 3,233.20 × 1,634.57
4. Step 4: Simplify right side
   2,154.72x = 5,284,891.72
5. Step 5: Solve for x
   x = 5,284,891.72/2,154.72
6. Step 6: Final answer
   x = 2,452.70