Finding the Fourth Proportional to 2,182.10, 3,270.15 and 1,256.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.10 : 3,270.15 = 1,256.30 : x
2. Step 2: Convert to fraction form
   2,182.10/3,270.15 = 1,256.30/x
3. Step 3: Cross multiply
   2,182.10x = 3,270.15 × 1,256.30
4. Step 4: Simplify right side
   2,182.10x = 4,108,289.45
5. Step 5: Solve for x
   x = 4,108,289.45/2,182.10
6. Step 6: Final answer
   x = 1,882.72