Finding the Fourth Proportional to 3,288.16, 4,931.52 and 979.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,288.16 : 4,931.52 = 979.12 : x
2. Step 2: Convert to fraction form
   3,288.16/4,931.52 = 979.12/x
3. Step 3: Cross multiply
   3,288.16x = 4,931.52 × 979.12
4. Step 4: Simplify right side
   3,288.16x = 4,828,549.86
5. Step 5: Solve for x
   x = 4,828,549.86/3,288.16
6. Step 6: Final answer
   x = 1,468.47