Finding the Fourth Proportional to 3,544.46, 5,314.66 and 1,078.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,544.46 : 5,314.66 = 1,078.55 : x
2. Step 2: Convert to fraction form
   3,544.46/5,314.66 = 1,078.55/x
3. Step 3: Cross multiply
   3,544.46x = 5,314.66 × 1,078.55
4. Step 4: Simplify right side
   3,544.46x = 5,732,123.27
5. Step 5: Solve for x
   x = 5,732,123.27/3,544.46
6. Step 6: Final answer
   x = 1,617.21