Finding the Fourth Proportional to 2,625.30, 3,938.15 and 776.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,625.30 : 3,938.15 = 776.37 : x
2. Step 2: Convert to fraction form
   2,625.30/3,938.15 = 776.37/x
3. Step 3: Cross multiply
   2,625.30x = 3,938.15 × 776.37
4. Step 4: Simplify right side
   2,625.30x = 3,057,478.22
5. Step 5: Solve for x
   x = 3,057,478.22/2,625.30
6. Step 6: Final answer
   x = 1,164.62