Finding the Fourth Proportional to 2,145.93, 3,218.50 and 759.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.93 : 3,218.50 = 759.27 : x
2. Step 2: Convert to fraction form
   2,145.93/3,218.50 = 759.27/x
3. Step 3: Cross multiply
   2,145.93x = 3,218.50 × 759.27
4. Step 4: Simplify right side
   2,145.93x = 2,443,723.51
5. Step 5: Solve for x
   x = 2,443,723.51/2,145.93
6. Step 6: Final answer
   x = 1,138.77