Finding the Fourth Proportional to 3,551.69, 5,329.07 and 1,906.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,551.69 : 5,329.07 = 1,906.31 : x
2. Step 2: Convert to fraction form
   3,551.69/5,329.07 = 1,906.31/x
3. Step 3: Cross multiply
   3,551.69x = 5,329.07 × 1,906.31
4. Step 4: Simplify right side
   3,551.69x = 10,158,870.37
5. Step 5: Solve for x
   x = 10,158,870.37/3,551.69
6. Step 6: Final answer
   x = 2,860.29