Finding the Fourth Proportional to 1,667.97, 2,302.38 and 1,078.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.97 : 2,302.38 = 1,078.56 : x
2. Step 2: Convert to fraction form
   1,667.97/2,302.38 = 1,078.56/x
3. Step 3: Cross multiply
   1,667.97x = 2,302.38 × 1,078.56
4. Step 4: Simplify right side
   1,667.97x = 2,483,254.97
5. Step 5: Solve for x
   x = 2,483,254.97/1,667.97
6. Step 6: Final answer
   x = 1,488.79