Finding the Fourth Proportional to 2,783.58, 3,843.27 and 1,840.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,783.58 : 3,843.27 = 1,840.20 : x
2. Step 2: Convert to fraction form
   2,783.58/3,843.27 = 1,840.20/x
3. Step 3: Cross multiply
   2,783.58x = 3,843.27 × 1,840.20
4. Step 4: Simplify right side
   2,783.58x = 7,072,385.45
5. Step 5: Solve for x
   x = 7,072,385.45/2,783.58
6. Step 6: Final answer
   x = 2,540.75