Finding the Fourth Proportional to 2,189.79, 3,021.71 and 1,293.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.79 : 3,021.71 = 1,293.39 : x
2. Step 2: Convert to fraction form
   2,189.79/3,021.71 = 1,293.39/x
3. Step 3: Cross multiply
   2,189.79x = 3,021.71 × 1,293.39
4. Step 4: Simplify right side
   2,189.79x = 3,908,243.03
5. Step 5: Solve for x
   x = 3,908,243.03/2,189.79
6. Step 6: Final answer
   x = 1,784.76