Finding the Fourth Proportional to 1,757.69, 2,636.82 and 718.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,757.69 : 2,636.82 = 718.25 : x
2. Step 2: Convert to fraction form
   1,757.69/2,636.82 = 718.25/x
3. Step 3: Cross multiply
   1,757.69x = 2,636.82 × 718.25
4. Step 4: Simplify right side
   1,757.69x = 1,893,882.78
5. Step 5: Solve for x
   x = 1,893,882.78/1,757.69
6. Step 6: Final answer
   x = 1,077.49