Finding the Fourth Proportional to 3,452.58, 5,177.31 and 986.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,452.58 : 5,177.31 = 986.82 : x
2. Step 2: Convert to fraction form
   3,452.58/5,177.31 = 986.82/x
3. Step 3: Cross multiply
   3,452.58x = 5,177.31 × 986.82
4. Step 4: Simplify right side
   3,452.58x = 5,109,073.05
5. Step 5: Solve for x
   x = 5,109,073.05/3,452.58
6. Step 6: Final answer
   x = 1,479.78