Finding the Fourth Proportional to 3,709.12, 5,560.71 and 1,859.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,709.12 : 5,560.71 = 1,859.28 : x
2. Step 2: Convert to fraction form
   3,709.12/5,560.71 = 1,859.28/x
3. Step 3: Cross multiply
   3,709.12x = 5,560.71 × 1,859.28
4. Step 4: Simplify right side
   3,709.12x = 10,338,916.89
5. Step 5: Solve for x
   x = 10,338,916.89/3,709.12
6. Step 6: Final answer
   x = 2,787.43