Finding the Fourth Proportional to 2,146.17, 3,218.81 and 759.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.17 : 3,218.81 = 759.55 : x
2. Step 2: Convert to fraction form
   2,146.17/3,218.81 = 759.55/x
3. Step 3: Cross multiply
   2,146.17x = 3,218.81 × 759.55
4. Step 4: Simplify right side
   2,146.17x = 2,444,856.79
5. Step 5: Solve for x
   x = 2,444,856.79/2,146.17
6. Step 6: Final answer
   x = 1,139.17