Finding the Fourth Proportional to 2,715.11, 4,071.29 and 1,326.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.11 : 4,071.29 = 1,326.37 : x
2. Step 2: Convert to fraction form
   2,715.11/4,071.29 = 1,326.37/x
3. Step 3: Cross multiply
   2,715.11x = 4,071.29 × 1,326.37
4. Step 4: Simplify right side
   2,715.11x = 5,400,030.05
5. Step 5: Solve for x
   x = 5,400,030.05/2,715.11
6. Step 6: Final answer
   x = 1,988.88