Finding the Fourth Proportional to 1,071.92, 1,479.52 and 679.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.92 : 1,479.52 = 679.16 : x
2. Step 2: Convert to fraction form
   1,071.92/1,479.52 = 679.16/x
3. Step 3: Cross multiply
   1,071.92x = 1,479.52 × 679.16
4. Step 4: Simplify right side
   1,071.92x = 1,004,830.80
5. Step 5: Solve for x
   x = 1,004,830.80/1,071.92
6. Step 6: Final answer
   x = 937.41