Finding the Fourth Proportional to 2,800.56, 3,864.72 and 1,558.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,800.56 : 3,864.72 = 1,558.56 : x
2. Step 2: Convert to fraction form
   2,800.56/3,864.72 = 1,558.56/x
3. Step 3: Cross multiply
   2,800.56x = 3,864.72 × 1,558.56
4. Step 4: Simplify right side
   2,800.56x = 6,023,398.00
5. Step 5: Solve for x
   x = 6,023,398.00/2,800.56
6. Step 6: Final answer
   x = 2,150.78