Finding the Fourth Proportional to 3,914.38, 5,872.38 and 1,317.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.38 : 5,872.38 = 1,317.25 : x
2. Step 2: Convert to fraction form
   3,914.38/5,872.38 = 1,317.25/x
3. Step 3: Cross multiply
   3,914.38x = 5,872.38 × 1,317.25
4. Step 4: Simplify right side
   3,914.38x = 7,735,392.56
5. Step 5: Solve for x
   x = 7,735,392.56/3,914.38
6. Step 6: Final answer
   x = 1,976.15