Finding the Fourth Proportional to 2,016.49, 3,023.65 and 921.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.49 : 3,023.65 = 921.10 : x
2. Step 2: Convert to fraction form
   2,016.49/3,023.65 = 921.10/x
3. Step 3: Cross multiply
   2,016.49x = 3,023.65 × 921.10
4. Step 4: Simplify right side
   2,016.49x = 2,785,084.02
5. Step 5: Solve for x
   x = 2,785,084.02/2,016.49
6. Step 6: Final answer
   x = 1,381.15