Finding the Fourth Proportional to 2,715.22, 4,073.49 and 866.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.22 : 4,073.49 = 866.34 : x
2. Step 2: Convert to fraction form
   2,715.22/4,073.49 = 866.34/x
3. Step 3: Cross multiply
   2,715.22x = 4,073.49 × 866.34
4. Step 4: Simplify right side
   2,715.22x = 3,529,009.12
5. Step 5: Solve for x
   x = 3,529,009.12/2,715.22
6. Step 6: Final answer
   x = 1,299.71