Finding the Fourth Proportional to 2,787.09, 3,846.30 and 1,528.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,787.09 : 3,846.30 = 1,528.27 : x
2. Step 2: Convert to fraction form
   2,787.09/3,846.30 = 1,528.27/x
3. Step 3: Cross multiply
   2,787.09x = 3,846.30 × 1,528.27
4. Step 4: Simplify right side
   2,787.09x = 5,878,178.15
5. Step 5: Solve for x
   x = 5,878,178.15/2,787.09
6. Step 6: Final answer
   x = 2,109.07