Finding the Fourth Proportional to 3,142.72, 4,690.90 and 2,882.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,142.72 : 4,690.90 = 2,882.98 : x
2. Step 2: Convert to fraction form
   3,142.72/4,690.90 = 2,882.98/x
3. Step 3: Cross multiply
   3,142.72x = 4,690.90 × 2,882.98
4. Step 4: Simplify right side
   3,142.72x = 13,523,770.88
5. Step 5: Solve for x
   x = 13,523,770.88/3,142.72
6. Step 6: Final answer
   x = 4,303.21