Finding the Fourth Proportional to 3,544.78, 5,317.76 and 1,079.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,544.78 : 5,317.76 = 1,079.42 : x
2. Step 2: Convert to fraction form
   3,544.78/5,317.76 = 1,079.42/x
3. Step 3: Cross multiply
   3,544.78x = 5,317.76 × 1,079.42
4. Step 4: Simplify right side
   3,544.78x = 5,740,096.50
5. Step 5: Solve for x
   x = 5,740,096.50/3,544.78
6. Step 6: Final answer
   x = 1,619.31