Finding the Fourth Proportional to 2,811.31, 3,879.61 and 1,552.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,811.31 : 3,879.61 = 1,552.37 : x
2. Step 2: Convert to fraction form
   2,811.31/3,879.61 = 1,552.37/x
3. Step 3: Cross multiply
   2,811.31x = 3,879.61 × 1,552.37
4. Step 4: Simplify right side
   2,811.31x = 6,022,590.18
5. Step 5: Solve for x
   x = 6,022,590.18/2,811.31
6. Step 6: Final answer
   x = 2,142.27