Finding the Fourth Proportional to 2,190.35, 3,022.98 and 1,306.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.35 : 3,022.98 = 1,306.10 : x
2. Step 2: Convert to fraction form
   2,190.35/3,022.98 = 1,306.10/x
3. Step 3: Cross multiply
   2,190.35x = 3,022.98 × 1,306.10
4. Step 4: Simplify right side
   2,190.35x = 3,948,314.18
5. Step 5: Solve for x
   x = 3,948,314.18/2,190.35
6. Step 6: Final answer
   x = 1,802.60