Finding the Fourth Proportional to 1,667.80, 2,301.68 and 969.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.80 : 2,301.68 = 969.28 : x
2. Step 2: Convert to fraction form
   1,667.80/2,301.68 = 969.28/x
3. Step 3: Cross multiply
   1,667.80x = 2,301.68 × 969.28
4. Step 4: Simplify right side
   1,667.80x = 2,230,972.39
5. Step 5: Solve for x
   x = 2,230,972.39/1,667.80
6. Step 6: Final answer
   x = 1,337.67