Finding the Fourth Proportional to 978.24, 1,459.22 and 884.82

Step by Step Solution

1. Step 1: Write the proportion equation
   978.24 : 1,459.22 = 884.82 : x
2. Step 2: Convert to fraction form
   978.24/1,459.22 = 884.82/x
3. Step 3: Cross multiply
   978.24x = 1,459.22 × 884.82
4. Step 4: Simplify right side
   978.24x = 1,291,148.09
5. Step 5: Solve for x
   x = 1,291,148.09/978.24
6. Step 6: Final answer
   x = 1,319.86