Finding the Fourth Proportional to 3,981.78, 5,971.59 and 1,384.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.78 : 5,971.59 = 1,384.38 : x
2. Step 2: Convert to fraction form
   3,981.78/5,971.59 = 1,384.38/x
3. Step 3: Cross multiply
   3,981.78x = 5,971.59 × 1,384.38
4. Step 4: Simplify right side
   3,981.78x = 8,266,949.76
5. Step 5: Solve for x
   x = 8,266,949.76/3,981.78
6. Step 6: Final answer
   x = 2,076.19