Finding the Fourth Proportional to 4,112, 5,674.56 and 2,870.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,112 : 5,674.56 = 2,870.72 : x
2. Step 2: Convert to fraction form
   4,112/5,674.56 = 2,870.72/x
3. Step 3: Cross multiply
   4,112x = 5,674.56 × 2,870.72
4. Step 4: Simplify right side
   4,112x = 16,290,072.88
5. Step 5: Solve for x
   x = 16,290,072.88/4,112
6. Step 6: Final answer
   x = 3,961.59