Finding the Fourth Proportional to 3,287, 4,931.37 and 978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,287 : 4,931.37 = 978.50 : x
2. Step 2: Convert to fraction form
   3,287/4,931.37 = 978.50/x
3. Step 3: Cross multiply
   3,287x = 4,931.37 × 978.50
4. Step 4: Simplify right side
   3,287x = 4,825,345.55
5. Step 5: Solve for x
   x = 4,825,345.55/3,287
6. Step 6: Final answer
   x = 1,468.01