Finding the Fourth Proportional to 2,787.05, 3,845.90 and 1,528.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,787.05 : 3,845.90 = 1,528.08 : x
2. Step 2: Convert to fraction form
   2,787.05/3,845.90 = 1,528.08/x
3. Step 3: Cross multiply
   2,787.05x = 3,845.90 × 1,528.08
4. Step 4: Simplify right side
   2,787.05x = 5,876,846.69
5. Step 5: Solve for x
   x = 5,876,846.69/2,787.05
6. Step 6: Final answer
   x = 2,108.62