Finding the Fourth Proportional to 984.34, 1,470.52 and 978.94

Step by Step Solution

1. Step 1: Write the proportion equation
   984.34 : 1,470.52 = 978.94 : x
2. Step 2: Convert to fraction form
   984.34/1,470.52 = 978.94/x
3. Step 3: Cross multiply
   984.34x = 1,470.52 × 978.94
4. Step 4: Simplify right side
   984.34x = 1,439,550.85
5. Step 5: Solve for x
   x = 1,439,550.85/984.34
6. Step 6: Final answer
   x = 1,462.45