Finding the Fourth Proportional to 2,872.24, 4,307.68 and 1,116.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,872.24 : 4,307.68 = 1,116.72 : x
2. Step 2: Convert to fraction form
   2,872.24/4,307.68 = 1,116.72/x
3. Step 3: Cross multiply
   2,872.24x = 4,307.68 × 1,116.72
4. Step 4: Simplify right side
   2,872.24x = 4,810,472.41
5. Step 5: Solve for x
   x = 4,810,472.41/2,872.24
6. Step 6: Final answer
   x = 1,674.82