Finding the Fourth Proportional to 3,298.72, 4,948.46 and 1,076.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,298.72 : 4,948.46 = 1,076.78 : x
2. Step 2: Convert to fraction form
   3,298.72/4,948.46 = 1,076.78/x
3. Step 3: Cross multiply
   3,298.72x = 4,948.46 × 1,076.78
4. Step 4: Simplify right side
   3,298.72x = 5,328,409.75
5. Step 5: Solve for x
   x = 5,328,409.75/3,298.72
6. Step 6: Final answer
   x = 1,615.30