Finding the Fourth Proportional to 1,667.93, 2,301.99 and 1,005.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.93 : 2,301.99 = 1,005.22 : x
2. Step 2: Convert to fraction form
   1,667.93/2,301.99 = 1,005.22/x
3. Step 3: Cross multiply
   1,667.93x = 2,301.99 × 1,005.22
4. Step 4: Simplify right side
   1,667.93x = 2,313,992.55
5. Step 5: Solve for x
   x = 2,313,992.55/1,667.93
6. Step 6: Final answer
   x = 1,387.35