Finding the Fourth Proportional to 2,277.09, 3,142.31 and 1,615.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277.09 : 3,142.31 = 1,615.05 : x
2. Step 2: Convert to fraction form
   2,277.09/3,142.31 = 1,615.05/x
3. Step 3: Cross multiply
   2,277.09x = 3,142.31 × 1,615.05
4. Step 4: Simplify right side
   2,277.09x = 5,074,979.69
5. Step 5: Solve for x
   x = 5,074,979.69/2,277.09
6. Step 6: Final answer
   x = 2,228.71