Finding the Fourth Proportional to 2,185.15, 3,015.37 and 1,190.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.15 : 3,015.37 = 1,190.38 : x
2. Step 2: Convert to fraction form
   2,185.15/3,015.37 = 1,190.38/x
3. Step 3: Cross multiply
   2,185.15x = 3,015.37 × 1,190.38
4. Step 4: Simplify right side
   2,185.15x = 3,589,436.14
5. Step 5: Solve for x
   x = 3,589,436.14/2,185.15
6. Step 6: Final answer
   x = 1,642.65