Finding the Fourth Proportional to 3,171.24, 4,753.56 and 1,224.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,171.24 : 4,753.56 = 1,224.78 : x
2. Step 2: Convert to fraction form
   3,171.24/4,753.56 = 1,224.78/x
3. Step 3: Cross multiply
   3,171.24x = 4,753.56 × 1,224.78
4. Step 4: Simplify right side
   3,171.24x = 5,822,065.22
5. Step 5: Solve for x
   x = 5,822,065.22/3,171.24
6. Step 6: Final answer
   x = 1,835.90