Finding the Fourth Proportional to 1,763.97, 2,434.30 and 978.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,763.97 : 2,434.30 = 978.03 : x
2. Step 2: Convert to fraction form
   1,763.97/2,434.30 = 978.03/x
3. Step 3: Cross multiply
   1,763.97x = 2,434.30 × 978.03
4. Step 4: Simplify right side
   1,763.97x = 2,380,819.62
5. Step 5: Solve for x
   x = 2,380,819.62/1,763.97
6. Step 6: Final answer
   x = 1,349.69