Finding the Fourth Proportional to 3,941.12, 5,912.37 and 1,308.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,941.12 : 5,912.37 = 1,308.78 : x
2. Step 2: Convert to fraction form
   3,941.12/5,912.37 = 1,308.78/x
3. Step 3: Cross multiply
   3,941.12x = 5,912.37 × 1,308.78
4. Step 4: Simplify right side
   3,941.12x = 7,737,991.61
5. Step 5: Solve for x
   x = 7,737,991.61/3,941.12
6. Step 6: Final answer
   x = 1,963.40