Finding the Fourth Proportional to 978.14, 1,446.73 and 978.14

Step by Step Solution

1. Step 1: Write the proportion equation
   978.14 : 1,446.73 = 978.14 : x
2. Step 2: Convert to fraction form
   978.14/1,446.73 = 978.14/x
3. Step 3: Cross multiply
   978.14x = 1,446.73 × 978.14
4. Step 4: Simplify right side
   978.14x = 1,415,105.65
5. Step 5: Solve for x
   x = 1,415,105.65/978.14
6. Step 6: Final answer
   x = 1,446.73