Finding the Fourth Proportional to 1,651.00, 2,278.25 and 978.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,651.00 : 2,278.25 = 978.79 : x
2. Step 2: Convert to fraction form
   1,651.00/2,278.25 = 978.79/x
3. Step 3: Cross multiply
   1,651.00x = 2,278.25 × 978.79
4. Step 4: Simplify right side
   1,651.00x = 2,229,928.32
5. Step 5: Solve for x
   x = 2,229,928.32/1,651.00
6. Step 6: Final answer
   x = 1,350.66