Finding the Fourth Proportional to 2,783.49, 3,839.85 and 1,897.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,783.49 : 3,839.85 = 1,897.89 : x
2. Step 2: Convert to fraction form
   2,783.49/3,839.85 = 1,897.89/x
3. Step 3: Cross multiply
   2,783.49x = 3,839.85 × 1,897.89
4. Step 4: Simplify right side
   2,783.49x = 7,287,612.92
5. Step 5: Solve for x
   x = 7,287,612.92/2,783.49
6. Step 6: Final answer
   x = 2,618.16