Finding the Fourth Proportional to 1,667.70, 2,301.70 and 1,004.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.70 : 2,301.70 = 1,004.65 : x
2. Step 2: Convert to fraction form
   1,667.70/2,301.70 = 1,004.65/x
3. Step 3: Cross multiply
   1,667.70x = 2,301.70 × 1,004.65
4. Step 4: Simplify right side
   1,667.70x = 2,312,413.71
5. Step 5: Solve for x
   x = 2,312,413.71/1,667.70
6. Step 6: Final answer
   x = 1,386.59