Finding the Fourth Proportional to 2,625.11, 3,937.31 and 776.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,625.11 : 3,937.31 = 776.42 : x
2. Step 2: Convert to fraction form
   2,625.11/3,937.31 = 776.42/x
3. Step 3: Cross multiply
   2,625.11x = 3,937.31 × 776.42
4. Step 4: Simplify right side
   2,625.11x = 3,057,000.34
5. Step 5: Solve for x
   x = 3,057,000.34/2,625.11
6. Step 6: Final answer
   x = 1,164.52