Finding the Fourth Proportional to 3,665.07, 5,494.35 and 1,906.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.07 : 5,494.35 = 1,906.38 : x
2. Step 2: Convert to fraction form
   3,665.07/5,494.35 = 1,906.38/x
3. Step 3: Cross multiply
   3,665.07x = 5,494.35 × 1,906.38
4. Step 4: Simplify right side
   3,665.07x = 10,474,318.95
5. Step 5: Solve for x
   x = 10,474,318.95/3,665.07
6. Step 6: Final answer
   x = 2,857.88