Finding the Fourth Proportional to 2,715, 4,071.15 and 1,327.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715 : 4,071.15 = 1,327.47 : x
2. Step 2: Convert to fraction form
   2,715/4,071.15 = 1,327.47/x
3. Step 3: Cross multiply
   2,715x = 4,071.15 × 1,327.47
4. Step 4: Simplify right side
   2,715x = 5,404,329.49
5. Step 5: Solve for x
   x = 5,404,329.49/2,715
6. Step 6: Final answer
   x = 1,990.54