Finding the Fourth Proportional to 2,257.12, 3,111.84 and 1,627.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,257.12 : 3,111.84 = 1,627.12 : x
2. Step 2: Convert to fraction form
   2,257.12/3,111.84 = 1,627.12/x
3. Step 3: Cross multiply
   2,257.12x = 3,111.84 × 1,627.12
4. Step 4: Simplify right side
   2,257.12x = 5,063,337.10
5. Step 5: Solve for x
   x = 5,063,337.10/2,257.12
6. Step 6: Final answer
   x = 2,243.27