Finding the Fourth Proportional to 2,215.18, 3,320.82 and 1,175.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.18 : 3,320.82 = 1,175.91 : x
2. Step 2: Convert to fraction form
   2,215.18/3,320.82 = 1,175.91/x
3. Step 3: Cross multiply
   2,215.18x = 3,320.82 × 1,175.91
4. Step 4: Simplify right side
   2,215.18x = 3,904,985.45
5. Step 5: Solve for x
   x = 3,904,985.45/2,215.18
6. Step 6: Final answer
   x = 1,762.83