Finding the Fourth Proportional to 1,629.86, 2,247.71 and 1,224.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,629.86 : 2,247.71 = 1,224.48 : x
2. Step 2: Convert to fraction form
   1,629.86/2,247.71 = 1,224.48/x
3. Step 3: Cross multiply
   1,629.86x = 2,247.71 × 1,224.48
4. Step 4: Simplify right side
   1,629.86x = 2,752,269.82
5. Step 5: Solve for x
   x = 2,752,269.82/1,629.86
6. Step 6: Final answer
   x = 1,688.66