Finding the Fourth Proportional to 1,616.27, 2,424.37 and 921.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,616.27 : 2,424.37 = 921.46 : x
2. Step 2: Convert to fraction form
   1,616.27/2,424.37 = 921.46/x
3. Step 3: Cross multiply
   1,616.27x = 2,424.37 × 921.46
4. Step 4: Simplify right side
   1,616.27x = 2,233,947.86
5. Step 5: Solve for x
   x = 2,233,947.86/1,616.27
6. Step 6: Final answer
   x = 1,382.17