Finding the Fourth Proportional to 2,217.78, 3,320.46 and 1,175.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.78 : 3,320.46 = 1,175.43 : x
2. Step 2: Convert to fraction form
   2,217.78/3,320.46 = 1,175.43/x
3. Step 3: Cross multiply
   2,217.78x = 3,320.46 × 1,175.43
4. Step 4: Simplify right side
   2,217.78x = 3,902,962.07
5. Step 5: Solve for x
   x = 3,902,962.07/2,217.78
6. Step 6: Final answer
   x = 1,759.85