Finding the Fourth Proportional to 3,444.21, 5,166.52 and 978.84

Step by Step Solution

1. Step 1: Write the proportion equation
   3,444.21 : 5,166.52 = 978.84 : x
2. Step 2: Convert to fraction form
   3,444.21/5,166.52 = 978.84/x
3. Step 3: Cross multiply
   3,444.21x = 5,166.52 × 978.84
4. Step 4: Simplify right side
   3,444.21x = 5,057,196.44
5. Step 5: Solve for x
   x = 5,057,196.44/3,444.21
6. Step 6: Final answer
   x = 1,468.32