Finding the Fourth Proportional to 3,906.42, 5,858.22 and 1,308.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.42 : 5,858.22 = 1,308.76 : x
2. Step 2: Convert to fraction form
   3,906.42/5,858.22 = 1,308.76/x
3. Step 3: Cross multiply
   3,906.42x = 5,858.22 × 1,308.76
4. Step 4: Simplify right side
   3,906.42x = 7,667,004.01
5. Step 5: Solve for x
   x = 7,667,004.01/3,906.42
6. Step 6: Final answer
   x = 1,962.67