Finding the Fourth Proportional to 2,828.85, 4,242.24 and 979.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,828.85 : 4,242.24 = 979.45 : x
2. Step 2: Convert to fraction form
   2,828.85/4,242.24 = 979.45/x
3. Step 3: Cross multiply
   2,828.85x = 4,242.24 × 979.45
4. Step 4: Simplify right side
   2,828.85x = 4,155,061.97
5. Step 5: Solve for x
   x = 4,155,061.97/2,828.85
6. Step 6: Final answer
   x = 1,468.82