Finding the Fourth Proportional to 2,190.57, 3,022.71 and 1,246.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.57 : 3,022.71 = 1,246.48 : x
2. Step 2: Convert to fraction form
   2,190.57/3,022.71 = 1,246.48/x
3. Step 3: Cross multiply
   2,190.57x = 3,022.71 × 1,246.48
4. Step 4: Simplify right side
   2,190.57x = 3,767,747.56
5. Step 5: Solve for x
   x = 3,767,747.56/2,190.57
6. Step 6: Final answer
   x = 1,719.99