Finding the Fourth Proportional to 3,168.77, 4,753.52 and 978.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,168.77 : 4,753.52 = 978.05 : x
2. Step 2: Convert to fraction form
   3,168.77/4,753.52 = 978.05/x
3. Step 3: Cross multiply
   3,168.77x = 4,753.52 × 978.05
4. Step 4: Simplify right side
   3,168.77x = 4,649,175.35
5. Step 5: Solve for x
   x = 4,649,175.35/3,168.77
6. Step 6: Final answer
   x = 1,467.19