Finding the Fourth Proportional to 2,236.47, 3,086.61 and 1,292.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.47 : 3,086.61 = 1,292.33 : x
2. Step 2: Convert to fraction form
   2,236.47/3,086.61 = 1,292.33/x
3. Step 3: Cross multiply
   2,236.47x = 3,086.61 × 1,292.33
4. Step 4: Simplify right side
   2,236.47x = 3,988,903.27
5. Step 5: Solve for x
   x = 3,988,903.27/2,236.47
6. Step 6: Final answer
   x = 1,783.57