Finding the Fourth Proportional to 2,729.98, 3,763.29 and 2,139.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,729.98 : 3,763.29 = 2,139.49 : x
2. Step 2: Convert to fraction form
   2,729.98/3,763.29 = 2,139.49/x
3. Step 3: Cross multiply
   2,729.98x = 3,763.29 × 2,139.49
4. Step 4: Simplify right side
   2,729.98x = 8,051,521.32
5. Step 5: Solve for x
   x = 8,051,521.32/2,729.98
6. Step 6: Final answer
   x = 2,949.30