Finding the Fourth Proportional to 2,145.67, 3,217.93 and 758.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.67 : 3,217.93 = 758.82 : x
2. Step 2: Convert to fraction form
   2,145.67/3,217.93 = 758.82/x
3. Step 3: Cross multiply
   2,145.67x = 3,217.93 × 758.82
4. Step 4: Simplify right side
   2,145.67x = 2,441,829.64
5. Step 5: Solve for x
   x = 2,441,829.64/2,145.67
6. Step 6: Final answer
   x = 1,138.03