Finding the Fourth Proportional to 1,787.81, 2,685.83 and 1,269.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,787.81 : 2,685.83 = 1,269.07 : x
2. Step 2: Convert to fraction form
   1,787.81/2,685.83 = 1,269.07/x
3. Step 3: Cross multiply
   1,787.81x = 2,685.83 × 1,269.07
4. Step 4: Simplify right side
   1,787.81x = 3,408,493.22
5. Step 5: Solve for x
   x = 3,408,493.22/1,787.81
6. Step 6: Final answer
   x = 1,906.52