Finding the Fourth Proportional to 2,017.48, 3,024.98 and 920.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.48 : 3,024.98 = 920.80 : x
2. Step 2: Convert to fraction form
   2,017.48/3,024.98 = 920.80/x
3. Step 3: Cross multiply
   2,017.48x = 3,024.98 × 920.80
4. Step 4: Simplify right side
   2,017.48x = 2,785,401.58
5. Step 5: Solve for x
   x = 2,785,401.58/2,017.48
6. Step 6: Final answer
   x = 1,380.63