Finding the Fourth Proportional to 1,764.69, 2,435.27 and 978.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,764.69 : 2,435.27 = 978.73 : x
2. Step 2: Convert to fraction form
   1,764.69/2,435.27 = 978.73/x
3. Step 3: Cross multiply
   1,764.69x = 2,435.27 × 978.73
4. Step 4: Simplify right side
   1,764.69x = 2,383,474.52
5. Step 5: Solve for x
   x = 2,383,474.52/1,764.69
6. Step 6: Final answer
   x = 1,350.65