Finding the Fourth Proportional to 1,667.36, 2,499.56 and 935.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.36 : 2,499.56 = 935.40 : x
2. Step 2: Convert to fraction form
   1,667.36/2,499.56 = 935.40/x
3. Step 3: Cross multiply
   1,667.36x = 2,499.56 × 935.40
4. Step 4: Simplify right side
   1,667.36x = 2,338,082.57
5. Step 5: Solve for x
   x = 2,338,082.57/1,667.36
6. Step 6: Final answer
   x = 1,402.27