Finding the Fourth Proportional to 2,187.52, 3,018.72 and 1,256.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.52 : 3,018.72 = 1,256.32 : x
2. Step 2: Convert to fraction form
   2,187.52/3,018.72 = 1,256.32/x
3. Step 3: Cross multiply
   2,187.52x = 3,018.72 × 1,256.32
4. Step 4: Simplify right side
   2,187.52x = 3,792,478.31
5. Step 5: Solve for x
   x = 3,792,478.31/2,187.52
6. Step 6: Final answer
   x = 1,733.69