Finding the Fourth Proportional to 2,612.80, 3,916.86 and 968.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.80 : 3,916.86 = 968.32 : x
2. Step 2: Convert to fraction form
   2,612.80/3,916.86 = 968.32/x
3. Step 3: Cross multiply
   2,612.80x = 3,916.86 × 968.32
4. Step 4: Simplify right side
   2,612.80x = 3,792,773.88
5. Step 5: Solve for x
   x = 3,792,773.88/2,612.80
6. Step 6: Final answer
   x = 1,451.61