Finding the Fourth Proportional to 2,953.44, 4,429.26 and 978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,953.44 : 4,429.26 = 978.72 : x
2. Step 2: Convert to fraction form
   2,953.44/4,429.26 = 978.72/x
3. Step 3: Cross multiply
   2,953.44x = 4,429.26 × 978.72
4. Step 4: Simplify right side
   2,953.44x = 4,335,005.35
5. Step 5: Solve for x
   x = 4,335,005.35/2,953.44
6. Step 6: Final answer
   x = 1,467.78