Finding the Fourth Proportional to 2,185.23, 3,015.69 and 1,190.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.23 : 3,015.69 = 1,190.55 : x
2. Step 2: Convert to fraction form
   2,185.23/3,015.69 = 1,190.55/x
3. Step 3: Cross multiply
   2,185.23x = 3,015.69 × 1,190.55
4. Step 4: Simplify right side
   2,185.23x = 3,590,329.73
5. Step 5: Solve for x
   x = 3,590,329.73/2,185.23
6. Step 6: Final answer
   x = 1,643.00