Finding the Fourth Proportional to 3,951.57, 5,925.37 and 1,318.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,951.57 : 5,925.37 = 1,318.16 : x
2. Step 2: Convert to fraction form
   3,951.57/5,925.37 = 1,318.16/x
3. Step 3: Cross multiply
   3,951.57x = 5,925.37 × 1,318.16
4. Step 4: Simplify right side
   3,951.57x = 7,810,585.72
5. Step 5: Solve for x
   x = 7,810,585.72/3,951.57
6. Step 6: Final answer
   x = 1,976.58