Finding the Fourth Proportional to 2,185.16, 3,015.50 and 1,190.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.16 : 3,015.50 = 1,190.39 : x
2. Step 2: Convert to fraction form
   2,185.16/3,015.50 = 1,190.39/x
3. Step 3: Cross multiply
   2,185.16x = 3,015.50 × 1,190.39
4. Step 4: Simplify right side
   2,185.16x = 3,589,600.02
5. Step 5: Solve for x
   x = 3,589,600.02/2,185.16
6. Step 6: Final answer
   x = 1,642.72