Finding the Fourth Proportional to 2,736.15, 3,775.71 and 1,557.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,736.15 : 3,775.71 = 1,557.21 : x
2. Step 2: Convert to fraction form
   2,736.15/3,775.71 = 1,557.21/x
3. Step 3: Cross multiply
   2,736.15x = 3,775.71 × 1,557.21
4. Step 4: Simplify right side
   2,736.15x = 5,879,573.37
5. Step 5: Solve for x
   x = 5,879,573.37/2,736.15
6. Step 6: Final answer
   x = 2,148.85