Finding the Fourth Proportional to 3,980.82, 5,971.27 and 1,381.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.82 : 5,971.27 = 1,381.94 : x
2. Step 2: Convert to fraction form
   3,980.82/5,971.27 = 1,381.94/x
3. Step 3: Cross multiply
   3,980.82x = 5,971.27 × 1,381.94
4. Step 4: Simplify right side
   3,980.82x = 8,251,936.86
5. Step 5: Solve for x
   x = 8,251,936.86/3,980.82
6. Step 6: Final answer
   x = 2,072.92