Finding the Fourth Proportional to 2,566.10, 3,849.15 and 618.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,566.10 : 3,849.15 = 618.30 : x
2. Step 2: Convert to fraction form
   2,566.10/3,849.15 = 618.30/x
3. Step 3: Cross multiply
   2,566.10x = 3,849.15 × 618.30
4. Step 4: Simplify right side
   2,566.10x = 2,379,929.45
5. Step 5: Solve for x
   x = 2,379,929.45/2,566.10
6. Step 6: Final answer
   x = 927.45