Finding the Fourth Proportional to 3,443.31, 5,165.02 and 978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,443.31 : 5,165.02 = 978.08 : x
2. Step 2: Convert to fraction form
   3,443.31/5,165.02 = 978.08/x
3. Step 3: Cross multiply
   3,443.31x = 5,165.02 × 978.08
4. Step 4: Simplify right side
   3,443.31x = 5,051,772.66
5. Step 5: Solve for x
   x = 5,051,772.66/3,443.31
6. Step 6: Final answer
   x = 1,467.13