Finding the Fourth Proportional to 2,280.45, 3,186.15 and 2,280.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.45 : 3,186.15 = 2,280.45 : x
2. Step 2: Convert to fraction form
   2,280.45/3,186.15 = 2,280.45/x
3. Step 3: Cross multiply
   2,280.45x = 3,186.15 × 2,280.45
4. Step 4: Simplify right side
   2,280.45x = 7,265,855.77
5. Step 5: Solve for x
   x = 7,265,855.77/2,280.45
6. Step 6: Final answer
   x = 3,186.15