Finding the Fourth Proportional to 3,276.52, 4,915.68 and 1,086.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,276.52 : 4,915.68 = 1,086.78 : x
2. Step 2: Convert to fraction form
   3,276.52/4,915.68 = 1,086.78/x
3. Step 3: Cross multiply
   3,276.52x = 4,915.68 × 1,086.78
4. Step 4: Simplify right side
   3,276.52x = 5,342,262.71
5. Step 5: Solve for x
   x = 5,342,262.71/3,276.52
6. Step 6: Final answer
   x = 1,630.47