Finding the Fourth Proportional to 2,017.29, 3,024.39 and 920.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.29 : 3,024.39 = 920.88 : x
2. Step 2: Convert to fraction form
   2,017.29/3,024.39 = 920.88/x
3. Step 3: Cross multiply
   2,017.29x = 3,024.39 × 920.88
4. Step 4: Simplify right side
   2,017.29x = 2,785,100.26
5. Step 5: Solve for x
   x = 2,785,100.26/2,017.29
6. Step 6: Final answer
   x = 1,380.61