Finding the Fourth Proportional to 1,034.36, 1,544.69 and 978.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,034.36 : 1,544.69 = 978.20 : x
2. Step 2: Convert to fraction form
   1,034.36/1,544.69 = 978.20/x
3. Step 3: Cross multiply
   1,034.36x = 1,544.69 × 978.20
4. Step 4: Simplify right side
   1,034.36x = 1,511,015.76
5. Step 5: Solve for x
   x = 1,511,015.76/1,034.36
6. Step 6: Final answer
   x = 1,460.82