Finding the Fourth Proportional to 4,680.78, 7,022.54 and 1,759.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,680.78 : 7,022.54 = 1,759.31 : x
2. Step 2: Convert to fraction form
   4,680.78/7,022.54 = 1,759.31/x
3. Step 3: Cross multiply
   4,680.78x = 7,022.54 × 1,759.31
4. Step 4: Simplify right side
   4,680.78x = 12,354,846.80
5. Step 5: Solve for x
   x = 12,354,846.80/4,680.78
6. Step 6: Final answer
   x = 2,639.48