Finding the Fourth Proportional to 2,577.89, 3,866.79 and 630.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.89 : 3,866.79 = 630.10 : x
2. Step 2: Convert to fraction form
   2,577.89/3,866.79 = 630.10/x
3. Step 3: Cross multiply
   2,577.89x = 3,866.79 × 630.10
4. Step 4: Simplify right side
   2,577.89x = 2,436,446.28
5. Step 5: Solve for x
   x = 2,436,446.28/2,577.89
6. Step 6: Final answer
   x = 945.13