Finding the Fourth Proportional to 2,827.89, 4,231.80 and 1,840.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,827.89 : 4,231.80 = 1,840.09 : x
2. Step 2: Convert to fraction form
   2,827.89/4,231.80 = 1,840.09/x
3. Step 3: Cross multiply
   2,827.89x = 4,231.80 × 1,840.09
4. Step 4: Simplify right side
   2,827.89x = 7,786,892.86
5. Step 5: Solve for x
   x = 7,786,892.86/2,827.89
6. Step 6: Final answer
   x = 2,753.61