Finding the Fourth Proportional to 2,277.32, 3,417.20 and 978.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277.32 : 3,417.20 = 978.71 : x
2. Step 2: Convert to fraction form
   2,277.32/3,417.20 = 978.71/x
3. Step 3: Cross multiply
   2,277.32x = 3,417.20 × 978.71
4. Step 4: Simplify right side
   2,277.32x = 3,344,442.92
5. Step 5: Solve for x
   x = 3,344,442.92/2,277.32
6. Step 6: Final answer
   x = 1,468.59