Finding the Fourth Proportional to 2,086.45, 3,126.16 and 1,262.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.45 : 3,126.16 = 1,262.22 : x
2. Step 2: Convert to fraction form
   2,086.45/3,126.16 = 1,262.22/x
3. Step 3: Cross multiply
   2,086.45x = 3,126.16 × 1,262.22
4. Step 4: Simplify right side
   2,086.45x = 3,945,901.68
5. Step 5: Solve for x
   x = 3,945,901.68/2,086.45
6. Step 6: Final answer
   x = 1,891.20