Finding the Fourth Proportional to 2,185.29, 3,015.71 and 1,190.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.29 : 3,015.71 = 1,190.55 : x
2. Step 2: Convert to fraction form
   2,185.29/3,015.71 = 1,190.55/x
3. Step 3: Cross multiply
   2,185.29x = 3,015.71 × 1,190.55
4. Step 4: Simplify right side
   2,185.29x = 3,590,340.74
5. Step 5: Solve for x
   x = 3,590,340.74/2,185.29
6. Step 6: Final answer
   x = 1,642.96