Finding the Fourth Proportional to 1,667.17, 2,497.36 and 935.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.17 : 2,497.36 = 935.21 : x
2. Step 2: Convert to fraction form
   1,667.17/2,497.36 = 935.21/x
3. Step 3: Cross multiply
   1,667.17x = 2,497.36 × 935.21
4. Step 4: Simplify right side
   1,667.17x = 2,335,548.54
5. Step 5: Solve for x
   x = 2,335,548.54/1,667.17
6. Step 6: Final answer
   x = 1,400.91