Finding the Fourth Proportional to 3,914.30, 5,872.18 and 1,317.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.30 : 5,872.18 = 1,317.18 : x
2. Step 2: Convert to fraction form
   3,914.30/5,872.18 = 1,317.18/x
3. Step 3: Cross multiply
   3,914.30x = 5,872.18 × 1,317.18
4. Step 4: Simplify right side
   3,914.30x = 7,734,718.05
5. Step 5: Solve for x
   x = 7,734,718.05/3,914.30
6. Step 6: Final answer
   x = 1,976.02