Finding the Fourth Proportional to 1,707.94, 2,561.16 and 667.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,707.94 : 2,561.16 = 667.39 : x
2. Step 2: Convert to fraction form
   1,707.94/2,561.16 = 667.39/x
3. Step 3: Cross multiply
   1,707.94x = 2,561.16 × 667.39
4. Step 4: Simplify right side
   1,707.94x = 1,709,292.57
5. Step 5: Solve for x
   x = 1,709,292.57/1,707.94
6. Step 6: Final answer
   x = 1,000.79