Finding the Fourth Proportional to 2,578.34, 3,558.52 and 1,516.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.34 : 3,558.52 = 1,516.30 : x
2. Step 2: Convert to fraction form
   2,578.34/3,558.52 = 1,516.30/x
3. Step 3: Cross multiply
   2,578.34x = 3,558.52 × 1,516.30
4. Step 4: Simplify right side
   2,578.34x = 5,395,783.88
5. Step 5: Solve for x
   x = 5,395,783.88/2,578.34
6. Step 6: Final answer
   x = 2,092.74