Finding the Fourth Proportional to 1,661.41, 2,292.72 and 953.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.41 : 2,292.72 = 953.38 : x
2. Step 2: Convert to fraction form
   1,661.41/2,292.72 = 953.38/x
3. Step 3: Cross multiply
   1,661.41x = 2,292.72 × 953.38
4. Step 4: Simplify right side
   1,661.41x = 2,185,833.39
5. Step 5: Solve for x
   x = 2,185,833.39/1,661.41
6. Step 6: Final answer
   x = 1,315.65