Finding the Fourth Proportional to 978.21, 1,468.53 and 895.59

Step by Step Solution

1. Step 1: Write the proportion equation
   978.21 : 1,468.53 = 895.59 : x
2. Step 2: Convert to fraction form
   978.21/1,468.53 = 895.59/x
3. Step 3: Cross multiply
   978.21x = 1,468.53 × 895.59
4. Step 4: Simplify right side
   978.21x = 1,315,200.78
5. Step 5: Solve for x
   x = 1,315,200.78/978.21
6. Step 6: Final answer
   x = 1,344.50