Finding the Fourth Proportional to 2,175.86, 3,264.05 and 715.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175.86 : 3,264.05 = 715.18 : x
2. Step 2: Convert to fraction form
   2,175.86/3,264.05 = 715.18/x
3. Step 3: Cross multiply
   2,175.86x = 3,264.05 × 715.18
4. Step 4: Simplify right side
   2,175.86x = 2,334,383.28
5. Step 5: Solve for x
   x = 2,334,383.28/2,175.86
6. Step 6: Final answer
   x = 1,072.86