Finding the Fourth Proportional to 1,751.27, 2,627.42 and 518.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,751.27 : 2,627.42 = 518.72 : x
2. Step 2: Convert to fraction form
   1,751.27/2,627.42 = 518.72/x
3. Step 3: Cross multiply
   1,751.27x = 2,627.42 × 518.72
4. Step 4: Simplify right side
   1,751.27x = 1,362,882.17
5. Step 5: Solve for x
   x = 1,362,882.17/1,751.27
6. Step 6: Final answer
   x = 778.23