Finding the Fourth Proportional to 2,016.53, 3,025.10 and 920.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.53 : 3,025.10 = 920.90 : x
2. Step 2: Convert to fraction form
   2,016.53/3,025.10 = 920.90/x
3. Step 3: Cross multiply
   2,016.53x = 3,025.10 × 920.90
4. Step 4: Simplify right side
   2,016.53x = 2,785,814.59
5. Step 5: Solve for x
   x = 2,785,814.59/2,016.53
6. Step 6: Final answer
   x = 1,381.49