Finding the Fourth Proportional to 1,764.30, 2,434.82 and 978.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,764.30 : 2,434.82 = 978.30 : x
2. Step 2: Convert to fraction form
   1,764.30/2,434.82 = 978.30/x
3. Step 3: Cross multiply
   1,764.30x = 2,434.82 × 978.30
4. Step 4: Simplify right side
   1,764.30x = 2,381,984.41
5. Step 5: Solve for x
   x = 2,381,984.41/1,764.30
6. Step 6: Final answer
   x = 1,350.10