Finding the Fourth Proportional to 2,605.72, 3,595.96 and 1,558.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.72 : 3,595.96 = 1,558.40 : x
2. Step 2: Convert to fraction form
   2,605.72/3,595.96 = 1,558.40/x
3. Step 3: Cross multiply
   2,605.72x = 3,595.96 × 1,558.40
4. Step 4: Simplify right side
   2,605.72x = 5,603,944.06
5. Step 5: Solve for x
   x = 5,603,944.06/2,605.72
6. Step 6: Final answer
   x = 2,150.63