Finding the Fourth Proportional to 1,667.76, 2,302.42 and 1,004.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.76 : 2,302.42 = 1,004.76 : x
2. Step 2: Convert to fraction form
   1,667.76/2,302.42 = 1,004.76/x
3. Step 3: Cross multiply
   1,667.76x = 2,302.42 × 1,004.76
4. Step 4: Simplify right side
   1,667.76x = 2,313,379.52
5. Step 5: Solve for x
   x = 2,313,379.52/1,667.76
6. Step 6: Final answer
   x = 1,387.12