Finding the Fourth Proportional to 1,667.64, 2,496.29 and 885.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.64 : 2,496.29 = 885.68 : x
2. Step 2: Convert to fraction form
   1,667.64/2,496.29 = 885.68/x
3. Step 3: Cross multiply
   1,667.64x = 2,496.29 × 885.68
4. Step 4: Simplify right side
   1,667.64x = 2,210,918.15
5. Step 5: Solve for x
   x = 2,210,918.15/1,667.64
6. Step 6: Final answer
   x = 1,325.78