Finding the Fourth Proportional to 2,185.31, 3,015.74 and 1,190.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.31 : 3,015.74 = 1,190.59 : x
2. Step 2: Convert to fraction form
   2,185.31/3,015.74 = 1,190.59/x
3. Step 3: Cross multiply
   2,185.31x = 3,015.74 × 1,190.59
4. Step 4: Simplify right side
   2,185.31x = 3,590,509.89
5. Step 5: Solve for x
   x = 3,590,509.89/2,185.31
6. Step 6: Final answer
   x = 1,643.02