Finding the Fourth Proportional to 2,185.49, 3,016.05 and 1,190.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.49 : 3,016.05 = 1,190.80 : x
2. Step 2: Convert to fraction form
   2,185.49/3,016.05 = 1,190.80/x
3. Step 3: Cross multiply
   2,185.49x = 3,016.05 × 1,190.80
4. Step 4: Simplify right side
   2,185.49x = 3,591,497.26
5. Step 5: Solve for x
   x = 3,591,497.26/2,185.49
6. Step 6: Final answer
   x = 1,643.34