Finding the Fourth Proportional to 3,308.50, 4,960.31 and 1,578.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,308.50 : 4,960.31 = 1,578.34 : x
2. Step 2: Convert to fraction form
   3,308.50/4,960.31 = 1,578.34/x
3. Step 3: Cross multiply
   3,308.50x = 4,960.31 × 1,578.34
4. Step 4: Simplify right side
   3,308.50x = 7,829,055.69
5. Step 5: Solve for x
   x = 7,829,055.69/3,308.50
6. Step 6: Final answer
   x = 2,366.35