Finding the Fourth Proportional to 1,764.85, 2,435.32 and 978.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,764.85 : 2,435.32 = 978.83 : x
2. Step 2: Convert to fraction form
   1,764.85/2,435.32 = 978.83/x
3. Step 3: Cross multiply
   1,764.85x = 2,435.32 × 978.83
4. Step 4: Simplify right side
   1,764.85x = 2,383,764.28
5. Step 5: Solve for x
   x = 2,383,764.28/1,764.85
6. Step 6: Final answer
   x = 1,350.69