Finding the Fourth Proportional to 2,787.77, 3,847.04 and 1,528.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,787.77 : 3,847.04 = 1,528.79 : x
2. Step 2: Convert to fraction form
   2,787.77/3,847.04 = 1,528.79/x
3. Step 3: Cross multiply
   2,787.77x = 3,847.04 × 1,528.79
4. Step 4: Simplify right side
   2,787.77x = 5,881,325.37
5. Step 5: Solve for x
   x = 5,881,325.37/2,787.77
6. Step 6: Final answer
   x = 2,109.69