Finding the Fourth Proportional to 2,145.59, 3,218.84 and 758.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.59 : 3,218.84 = 758.97 : x
2. Step 2: Convert to fraction form
   2,145.59/3,218.84 = 758.97/x
3. Step 3: Cross multiply
   2,145.59x = 3,218.84 × 758.97
4. Step 4: Simplify right side
   2,145.59x = 2,443,002.05
5. Step 5: Solve for x
   x = 2,443,002.05/2,145.59
6. Step 6: Final answer
   x = 1,138.62