Finding the Fourth Proportional to 1,079.46, 1,488.78 and 730.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.46 : 1,488.78 = 730.08 : x
2. Step 2: Convert to fraction form
   1,079.46/1,488.78 = 730.08/x
3. Step 3: Cross multiply
   1,079.46x = 1,488.78 × 730.08
4. Step 4: Simplify right side
   1,079.46x = 1,086,928.50
5. Step 5: Solve for x
   x = 1,086,928.50/1,079.46
6. Step 6: Final answer
   x = 1,006.92