Finding the Fourth Proportional to 2,236.69, 3,086.62 and 1,292.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.69 : 3,086.62 = 1,292.47 : x
2. Step 2: Convert to fraction form
   2,236.69/3,086.62 = 1,292.47/x
3. Step 3: Cross multiply
   2,236.69x = 3,086.62 × 1,292.47
4. Step 4: Simplify right side
   2,236.69x = 3,989,363.75
5. Step 5: Solve for x
   x = 3,989,363.75/2,236.69
6. Step 6: Final answer
   x = 1,783.60