Finding the Fourth Proportional to 3,141.67, 4,335.56 and 1,815.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,141.67 : 4,335.56 = 1,815.49 : x
2. Step 2: Convert to fraction form
   3,141.67/4,335.56 = 1,815.49/x
3. Step 3: Cross multiply
   3,141.67x = 4,335.56 × 1,815.49
4. Step 4: Simplify right side
   3,141.67x = 7,871,165.82
5. Step 5: Solve for x
   x = 7,871,165.82/3,141.67
6. Step 6: Final answer
   x = 2,505.41