Finding the Fourth Proportional to 4,680.29, 7,020.42 and 1,906.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,680.29 : 7,020.42 = 1,906.31 : x
2. Step 2: Convert to fraction form
   4,680.29/7,020.42 = 1,906.31/x
3. Step 3: Cross multiply
   4,680.29x = 7,020.42 × 1,906.31
4. Step 4: Simplify right side
   4,680.29x = 13,383,096.85
5. Step 5: Solve for x
   x = 13,383,096.85/4,680.29
6. Step 6: Final answer
   x = 2,859.46