Finding the Fourth Proportional to 1,016.61, 1,403.04 and 954.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.61 : 1,403.04 = 954.06 : x
2. Step 2: Convert to fraction form
   1,016.61/1,403.04 = 954.06/x
3. Step 3: Cross multiply
   1,016.61x = 1,403.04 × 954.06
4. Step 4: Simplify right side
   1,016.61x = 1,338,584.34
5. Step 5: Solve for x
   x = 1,338,584.34/1,016.61
6. Step 6: Final answer
   x = 1,316.71