Finding the Fourth Proportional to 978,796.80, 1,373,464.80 and 978,796.80

Step by Step Solution

1. Step 1: Write the proportion equation
   978,796.80 : 1,373,464.80 = 978,796.80 : x
2. Step 2: Convert to fraction form
   978,796.80/1,373,464.80 = 978,796.80/x
3. Step 3: Cross multiply
   978,796.80x = 1,373,464.80 × 978,796.80
4. Step 4: Simplify right side
   978,796.80x = 1,344,342,951,152.64
5. Step 5: Solve for x
   x = 1,344,342,951,152.64/978,796.80
6. Step 6: Final answer
   x = 1,373,464.80