Finding the Fourth Proportional to 3,899.86, 5,380.27 and 2,483.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,899.86 : 5,380.27 = 2,483.18 : x
2. Step 2: Convert to fraction form
   3,899.86/5,380.27 = 2,483.18/x
3. Step 3: Cross multiply
   3,899.86x = 5,380.27 × 2,483.18
4. Step 4: Simplify right side
   3,899.86x = 13,360,178.86
5. Step 5: Solve for x
   x = 13,360,178.86/3,899.86
6. Step 6: Final answer
   x = 3,425.81