Finding the Fourth Proportional to 3,182.72, 4,386.72 and 2,238.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,182.72 : 4,386.72 = 2,238.80 : x
2. Step 2: Convert to fraction form
   3,182.72/4,386.72 = 2,238.80/x
3. Step 3: Cross multiply
   3,182.72x = 4,386.72 × 2,238.80
4. Step 4: Simplify right side
   3,182.72x = 9,820,988.74
5. Step 5: Solve for x
   x = 9,820,988.74/3,182.72
6. Step 6: Final answer
   x = 3,085.72