Finding the Fourth Proportional to 3,443.48, 5,165.21 and 978.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,443.48 : 5,165.21 = 978.33 : x
2. Step 2: Convert to fraction form
   3,443.48/5,165.21 = 978.33/x
3. Step 3: Cross multiply
   3,443.48x = 5,165.21 × 978.33
4. Step 4: Simplify right side
   3,443.48x = 5,053,254.07
5. Step 5: Solve for x
   x = 5,053,254.07/3,443.48
6. Step 6: Final answer
   x = 1,467.48