Finding the Fourth Proportional to 1,667.33, 2,300.91 and 911.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.33 : 2,300.91 = 911.11 : x
2. Step 2: Convert to fraction form
   1,667.33/2,300.91 = 911.11/x
3. Step 3: Cross multiply
   1,667.33x = 2,300.91 × 911.11
4. Step 4: Simplify right side
   1,667.33x = 2,096,382.11
5. Step 5: Solve for x
   x = 2,096,382.11/1,667.33
6. Step 6: Final answer
   x = 1,257.33