Finding the Fourth Proportional to 1,467.72, 2,198.34 and 978.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,467.72 : 2,198.34 = 978.48 : x
2. Step 2: Convert to fraction form
   1,467.72/2,198.34 = 978.48/x
3. Step 3: Cross multiply
   1,467.72x = 2,198.34 × 978.48
4. Step 4: Simplify right side
   1,467.72x = 2,151,031.72
5. Step 5: Solve for x
   x = 2,151,031.72/1,467.72
6. Step 6: Final answer
   x = 1,465.56