Finding the Fourth Proportional to 3,551.47, 5,322.58 and 1,906.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,551.47 : 5,322.58 = 1,906.09 : x
2. Step 2: Convert to fraction form
   3,551.47/5,322.58 = 1,906.09/x
3. Step 3: Cross multiply
   3,551.47x = 5,322.58 × 1,906.09
4. Step 4: Simplify right side
   3,551.47x = 10,145,316.51
5. Step 5: Solve for x
   x = 10,145,316.51/3,551.47
6. Step 6: Final answer
   x = 2,856.65