Finding the Fourth Proportional to 2,185.48, 3,015.96 and 1,190.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.48 : 3,015.96 = 1,190.76 : x
2. Step 2: Convert to fraction form
   2,185.48/3,015.96 = 1,190.76/x
3. Step 3: Cross multiply
   2,185.48x = 3,015.96 × 1,190.76
4. Step 4: Simplify right side
   2,185.48x = 3,591,280.59
5. Step 5: Solve for x
   x = 3,591,280.59/2,185.48
6. Step 6: Final answer
   x = 1,643.25