Finding the Fourth Proportional to 3,278.88, 4,916.52 and 1,086.84

Step by Step Solution

1. Step 1: Write the proportion equation
   3,278.88 : 4,916.52 = 1,086.84 : x
2. Step 2: Convert to fraction form
   3,278.88/4,916.52 = 1,086.84/x
3. Step 3: Cross multiply
   3,278.88x = 4,916.52 × 1,086.84
4. Step 4: Simplify right side
   3,278.88x = 5,343,470.60
5. Step 5: Solve for x
   x = 5,343,470.60/3,278.88
6. Step 6: Final answer
   x = 1,629.66