Finding the Fourth Proportional to 2,277.34, 3,416.22 and 978.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277.34 : 3,416.22 = 978.51 : x
2. Step 2: Convert to fraction form
   2,277.34/3,416.22 = 978.51/x
3. Step 3: Cross multiply
   2,277.34x = 3,416.22 × 978.51
4. Step 4: Simplify right side
   2,277.34x = 3,342,805.43
5. Step 5: Solve for x
   x = 3,342,805.43/2,277.34
6. Step 6: Final answer
   x = 1,467.86