Finding the Fourth Proportional to 2,016.54, 3,025.16 and 921.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.54 : 3,025.16 = 921.02 : x
2. Step 2: Convert to fraction form
   2,016.54/3,025.16 = 921.02/x
3. Step 3: Cross multiply
   2,016.54x = 3,025.16 × 921.02
4. Step 4: Simplify right side
   2,016.54x = 2,786,220.04
5. Step 5: Solve for x
   x = 2,786,220.04/2,016.54
6. Step 6: Final answer
   x = 1,381.68