Finding the Fourth Proportional to 3,905.55, 5,859.18 and 1,308.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,905.55 : 5,859.18 = 1,308.42 : x
2. Step 2: Convert to fraction form
   3,905.55/5,859.18 = 1,308.42/x
3. Step 3: Cross multiply
   3,905.55x = 5,859.18 × 1,308.42
4. Step 4: Simplify right side
   3,905.55x = 7,666,268.30
5. Step 5: Solve for x
   x = 7,666,268.30/3,905.55
6. Step 6: Final answer
   x = 1,962.92