Finding the Fourth Proportional to 1,707.43, 2,561.27 and 667.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,707.43 : 2,561.27 = 667.35 : x
2. Step 2: Convert to fraction form
   1,707.43/2,561.27 = 667.35/x
3. Step 3: Cross multiply
   1,707.43x = 2,561.27 × 667.35
4. Step 4: Simplify right side
   1,707.43x = 1,709,269.94
5. Step 5: Solve for x
   x = 1,709,269.94/1,707.43
6. Step 6: Final answer
   x = 1,001.08