Finding the Fourth Proportional to 2,280.02, 3,422.15 and 1,185.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.02 : 3,422.15 = 1,185.15 : x
2. Step 2: Convert to fraction form
   2,280.02/3,422.15 = 1,185.15/x
3. Step 3: Cross multiply
   2,280.02x = 3,422.15 × 1,185.15
4. Step 4: Simplify right side
   2,280.02x = 4,055,755.15
5. Step 5: Solve for x
   x = 4,055,755.15/2,280.02
6. Step 6: Final answer
   x = 1,778.83