Finding the Fourth Proportional to 978,114.15, 1,366,560.45 and 978,114.15

Step by Step Solution

1. Step 1: Write the proportion equation
   978,114.15 : 1,366,560.45 = 978,114.15 : x
2. Step 2: Convert to fraction form
   978,114.15/1,366,560.45 = 978,114.15/x
3. Step 3: Cross multiply
   978,114.15x = 1,366,560.45 × 978,114.15
4. Step 4: Simplify right side
   978,114.15x = 1,336,652,112,975.37
5. Step 5: Solve for x
   x = 1,336,652,112,975.37/978,114.15
6. Step 6: Final answer
   x = 1,366,560.45