Finding the Fourth Proportional to 2,187.92, 3,019.33 and 1,256.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.92 : 3,019.33 = 1,256.42 : x
2. Step 2: Convert to fraction form
   2,187.92/3,019.33 = 1,256.42/x
3. Step 3: Cross multiply
   2,187.92x = 3,019.33 × 1,256.42
4. Step 4: Simplify right side
   2,187.92x = 3,793,546.60
5. Step 5: Solve for x
   x = 3,793,546.60/2,187.92
6. Step 6: Final answer
   x = 1,733.86