Finding the Fourth Proportional to 1,764.04, 2,434.41 and 978.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,764.04 : 2,434.41 = 978.07 : x
2. Step 2: Convert to fraction form
   1,764.04/2,434.41 = 978.07/x
3. Step 3: Cross multiply
   1,764.04x = 2,434.41 × 978.07
4. Step 4: Simplify right side
   1,764.04x = 2,381,023.39
5. Step 5: Solve for x
   x = 2,381,023.39/1,764.04
6. Step 6: Final answer
   x = 1,349.76