Finding the Fourth Proportional to 2,147.67, 3,221.91 and 1,224.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.67 : 3,221.91 = 1,224.27 : x
2. Step 2: Convert to fraction form
   2,147.67/3,221.91 = 1,224.27/x
3. Step 3: Cross multiply
   2,147.67x = 3,221.91 × 1,224.27
4. Step 4: Simplify right side
   2,147.67x = 3,944,487.76
5. Step 5: Solve for x
   x = 3,944,487.76/2,147.67
6. Step 6: Final answer
   x = 1,836.64