Finding the Fourth Proportional to 2,187.75, 3,019.38 and 1,256.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.75 : 3,019.38 = 1,256.25 : x
2. Step 2: Convert to fraction form
   2,187.75/3,019.38 = 1,256.25/x
3. Step 3: Cross multiply
   2,187.75x = 3,019.38 × 1,256.25
4. Step 4: Simplify right side
   2,187.75x = 3,793,096.13
5. Step 5: Solve for x
   x = 3,793,096.13/2,187.75
6. Step 6: Final answer
   x = 1,733.79