Finding the Fourth Proportional to 1,764.04, 2,434.38 and 978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,764.04 : 2,434.38 = 978.08 : x
2. Step 2: Convert to fraction form
   1,764.04/2,434.38 = 978.08/x
3. Step 3: Cross multiply
   1,764.04x = 2,434.38 × 978.08
4. Step 4: Simplify right side
   1,764.04x = 2,381,018.39
5. Step 5: Solve for x
   x = 2,381,018.39/1,764.04
6. Step 6: Final answer
   x = 1,349.75