Finding the Fourth Proportional to 1,667.57, 2,300.78 and 959.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.57 : 2,300.78 = 959.38 : x
2. Step 2: Convert to fraction form
   1,667.57/2,300.78 = 959.38/x
3. Step 3: Cross multiply
   1,667.57x = 2,300.78 × 959.38
4. Step 4: Simplify right side
   1,667.57x = 2,207,322.32
5. Step 5: Solve for x
   x = 2,207,322.32/1,667.57
6. Step 6: Final answer
   x = 1,323.68