Finding the Fourth Proportional to 2,278.76, 3,141.45 and 1,615.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,278.76 : 3,141.45 = 1,615.37 : x
2. Step 2: Convert to fraction form
   2,278.76/3,141.45 = 1,615.37/x
3. Step 3: Cross multiply
   2,278.76x = 3,141.45 × 1,615.37
4. Step 4: Simplify right side
   2,278.76x = 5,074,588.38
5. Step 5: Solve for x
   x = 5,074,588.38/2,278.76
6. Step 6: Final answer
   x = 2,226.91