Finding the Fourth Proportional to 2,839.98, 3,919.76 and 1,661.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,839.98 : 3,919.76 = 1,661.34 : x
2. Step 2: Convert to fraction form
   2,839.98/3,919.76 = 1,661.34/x
3. Step 3: Cross multiply
   2,839.98x = 3,919.76 × 1,661.34
4. Step 4: Simplify right side
   2,839.98x = 6,512,045.77
5. Step 5: Solve for x
   x = 6,512,045.77/2,839.98
6. Step 6: Final answer
   x = 2,292.99