Finding the Fourth Proportional to 1,764.54, 2,435.09 and 978.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,764.54 : 2,435.09 = 978.53 : x
2. Step 2: Convert to fraction form
   1,764.54/2,435.09 = 978.53/x
3. Step 3: Cross multiply
   1,764.54x = 2,435.09 × 978.53
4. Step 4: Simplify right side
   1,764.54x = 2,382,791.55
5. Step 5: Solve for x
   x = 2,382,791.55/1,764.54
6. Step 6: Final answer
   x = 1,350.38