Finding the Fourth Proportional to 2,715.34, 4,073.33 and 865.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.34 : 4,073.33 = 865.81 : x
2. Step 2: Convert to fraction form
   2,715.34/4,073.33 = 865.81/x
3. Step 3: Cross multiply
   2,715.34x = 4,073.33 × 865.81
4. Step 4: Simplify right side
   2,715.34x = 3,526,709.48
5. Step 5: Solve for x
   x = 3,526,709.48/2,715.34
6. Step 6: Final answer
   x = 1,298.81