Finding the Fourth Proportional to 1,641.89, 2,462.89 and 668.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.89 : 2,462.89 = 668.07 : x
2. Step 2: Convert to fraction form
   1,641.89/2,462.89 = 668.07/x
3. Step 3: Cross multiply
   1,641.89x = 2,462.89 × 668.07
4. Step 4: Simplify right side
   1,641.89x = 1,645,382.92
5. Step 5: Solve for x
   x = 1,645,382.92/1,641.89
6. Step 6: Final answer
   x = 1,002.13