Finding the Fourth Proportional to 2,190.49, 3,022.17 and 1,306.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.49 : 3,022.17 = 1,306.18 : x
2. Step 2: Convert to fraction form
   2,190.49/3,022.17 = 1,306.18/x
3. Step 3: Cross multiply
   2,190.49x = 3,022.17 × 1,306.18
4. Step 4: Simplify right side
   2,190.49x = 3,947,498.01
5. Step 5: Solve for x
   x = 3,947,498.01/2,190.49
6. Step 6: Final answer
   x = 1,802.11