Finding the Fourth Proportional to 2,431.28, 3,647.24 and 1,114.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.28 : 3,647.24 = 1,114.71 : x
2. Step 2: Convert to fraction form
   2,431.28/3,647.24 = 1,114.71/x
3. Step 3: Cross multiply
   2,431.28x = 3,647.24 × 1,114.71
4. Step 4: Simplify right side
   2,431.28x = 4,065,609.33
5. Step 5: Solve for x
   x = 4,065,609.33/2,431.28
6. Step 6: Final answer
   x = 1,672.21