Finding the Fourth Proportional to 3,971.86, 5,481.35 and 2,203.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,971.86 : 5,481.35 = 2,203.47 : x
2. Step 2: Convert to fraction form
   3,971.86/5,481.35 = 2,203.47/x
3. Step 3: Cross multiply
   3,971.86x = 5,481.35 × 2,203.47
4. Step 4: Simplify right side
   3,971.86x = 12,077,990.28
5. Step 5: Solve for x
   x = 12,077,990.28/3,971.86
6. Step 6: Final answer
   x = 3,040.89