Finding the Fourth Proportional to 2,176.05, 3,264.15 and 715.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,176.05 : 3,264.15 = 715.31 : x
2. Step 2: Convert to fraction form
   2,176.05/3,264.15 = 715.31/x
3. Step 3: Cross multiply
   2,176.05x = 3,264.15 × 715.31
4. Step 4: Simplify right side
   2,176.05x = 2,334,885.51
5. Step 5: Solve for x
   x = 2,334,885.51/2,176.05
6. Step 6: Final answer
   x = 1,072.99