Finding the Fourth Proportional to 1,879.47, 2,831.89 and 1,557.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,879.47 : 2,831.89 = 1,557.56 : x
2. Step 2: Convert to fraction form
   1,879.47/2,831.89 = 1,557.56/x
3. Step 3: Cross multiply
   1,879.47x = 2,831.89 × 1,557.56
4. Step 4: Simplify right side
   1,879.47x = 4,410,844.69
5. Step 5: Solve for x
   x = 4,410,844.69/1,879.47
6. Step 6: Final answer
   x = 2,346.86