Finding the Fourth Proportional to 2,986.72, 4,479.36 and 934.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,986.72 : 4,479.36 = 934.72 : x
2. Step 2: Convert to fraction form
   2,986.72/4,479.36 = 934.72/x
3. Step 3: Cross multiply
   2,986.72x = 4,479.36 × 934.72
4. Step 4: Simplify right side
   2,986.72x = 4,186,947.38
5. Step 5: Solve for x
   x = 4,186,947.38/2,986.72
6. Step 6: Final answer
   x = 1,401.85