Finding the Fourth Proportional to 1,668.72, 2,501.73 and 695.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,668.72 : 2,501.73 = 695.55 : x
2. Step 2: Convert to fraction form
   1,668.72/2,501.73 = 695.55/x
3. Step 3: Cross multiply
   1,668.72x = 2,501.73 × 695.55
4. Step 4: Simplify right side
   1,668.72x = 1,740,078.30
5. Step 5: Solve for x
   x = 1,740,078.30/1,668.72
6. Step 6: Final answer
   x = 1,042.76