Finding the Fourth Proportional to 3,443.58, 5,165.37 and 978.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,443.58 : 5,165.37 = 978.62 : x
2. Step 2: Convert to fraction form
   3,443.58/5,165.37 = 978.62/x
3. Step 3: Cross multiply
   3,443.58x = 5,165.37 × 978.62
4. Step 4: Simplify right side
   3,443.58x = 5,054,908.56
5. Step 5: Solve for x
   x = 5,054,908.56/3,443.58
6. Step 6: Final answer
   x = 1,467.92