Finding the Fourth Proportional to 2,786.32, 4,180.24 and 1,054.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,786.32 : 4,180.24 = 1,054.56 : x
2. Step 2: Convert to fraction form
   2,786.32/4,180.24 = 1,054.56/x
3. Step 3: Cross multiply
   2,786.32x = 4,180.24 × 1,054.56
4. Step 4: Simplify right side
   2,786.32x = 4,408,313.89
5. Step 5: Solve for x
   x = 4,408,313.89/2,786.32
6. Step 6: Final answer
   x = 1,582.13