Finding the Fourth Proportional to 2,981.84, 4,109.78 and 2,140.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,981.84 : 4,109.78 = 2,140.24 : x
2. Step 2: Convert to fraction form
   2,981.84/4,109.78 = 2,140.24/x
3. Step 3: Cross multiply
   2,981.84x = 4,109.78 × 2,140.24
4. Step 4: Simplify right side
   2,981.84x = 8,795,915.55
5. Step 5: Solve for x
   x = 8,795,915.55/2,981.84
6. Step 6: Final answer
   x = 2,949.83