Finding the Fourth Proportional to 2,016.84, 3,025.67 and 920.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.84 : 3,025.67 = 920.91 : x
2. Step 2: Convert to fraction form
   2,016.84/3,025.67 = 920.91/x
3. Step 3: Cross multiply
   2,016.84x = 3,025.67 × 920.91
4. Step 4: Simplify right side
   2,016.84x = 2,786,365.16
5. Step 5: Solve for x
   x = 2,786,365.16/2,016.84
6. Step 6: Final answer
   x = 1,381.55