Finding the Fourth Proportional to 2,185.41, 3,015.87 and 1,190.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.41 : 3,015.87 = 1,190.68 : x
2. Step 2: Convert to fraction form
   2,185.41/3,015.87 = 1,190.68/x
3. Step 3: Cross multiply
   2,185.41x = 3,015.87 × 1,190.68
4. Step 4: Simplify right side
   2,185.41x = 3,590,928.55
5. Step 5: Solve for x
   x = 3,590,928.55/2,185.41
6. Step 6: Final answer
   x = 1,643.14