Finding the Fourth Proportional to 2,781.10, 3,837.55 and 1,787.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,781.10 : 3,837.55 = 1,787.72 : x
2. Step 2: Convert to fraction form
   2,781.10/3,837.55 = 1,787.72/x
3. Step 3: Cross multiply
   2,781.10x = 3,837.55 × 1,787.72
4. Step 4: Simplify right side
   2,781.10x = 6,860,464.89
5. Step 5: Solve for x
   x = 6,860,464.89/2,781.10
6. Step 6: Final answer
   x = 2,466.82