Finding the Fourth Proportional to 2,578.52, 3,558.36 and 1,530.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.52 : 3,558.36 = 1,530.76 : x
2. Step 2: Convert to fraction form
   2,578.52/3,558.36 = 1,530.76/x
3. Step 3: Cross multiply
   2,578.52x = 3,558.36 × 1,530.76
4. Step 4: Simplify right side
   2,578.52x = 5,446,995.15
5. Step 5: Solve for x
   x = 5,446,995.15/2,578.52
6. Step 6: Final answer
   x = 2,112.45