Finding the Fourth Proportional to 2,190.89, 3,023.47 and 1,196.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.89 : 3,023.47 = 1,196.21 : x
2. Step 2: Convert to fraction form
   2,190.89/3,023.47 = 1,196.21/x
3. Step 3: Cross multiply
   2,190.89x = 3,023.47 × 1,196.21
4. Step 4: Simplify right side
   2,190.89x = 3,616,708.96
5. Step 5: Solve for x
   x = 3,616,708.96/2,190.89
6. Step 6: Final answer
   x = 1,650.79