Finding the Fourth Proportional to 2,188.41, 3,280.56 and 954.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.41 : 3,280.56 = 954.81 : x
2. Step 2: Convert to fraction form
   2,188.41/3,280.56 = 954.81/x
3. Step 3: Cross multiply
   2,188.41x = 3,280.56 × 954.81
4. Step 4: Simplify right side
   2,188.41x = 3,132,295.09
5. Step 5: Solve for x
   x = 3,132,295.09/2,188.41
6. Step 6: Final answer
   x = 1,431.31