Finding the Fourth Proportional to 2,627.06, 3,939.41 and 777.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,627.06 : 3,939.41 = 777.53 : x
2. Step 2: Convert to fraction form
   2,627.06/3,939.41 = 777.53/x
3. Step 3: Cross multiply
   2,627.06x = 3,939.41 × 777.53
4. Step 4: Simplify right side
   2,627.06x = 3,063,009.46
5. Step 5: Solve for x
   x = 3,063,009.46/2,627.06
6. Step 6: Final answer
   x = 1,165.95