Finding the Fourth Proportional to 2,986.30, 4,479.72 and 1,112.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,986.30 : 4,479.72 = 1,112.23 : x
2. Step 2: Convert to fraction form
   2,986.30/4,479.72 = 1,112.23/x
3. Step 3: Cross multiply
   2,986.30x = 4,479.72 × 1,112.23
4. Step 4: Simplify right side
   2,986.30x = 4,982,478.98
5. Step 5: Solve for x
   x = 4,982,478.98/2,986.30
6. Step 6: Final answer
   x = 1,668.45