Finding the Fourth Proportional to 1,544.24, 2,131.04 and 954.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.24 : 2,131.04 = 954.78 : x
2. Step 2: Convert to fraction form
   1,544.24/2,131.04 = 954.78/x
3. Step 3: Cross multiply
   1,544.24x = 2,131.04 × 954.78
4. Step 4: Simplify right side
   1,544.24x = 2,034,674.37
5. Step 5: Solve for x
   x = 2,034,674.37/1,544.24
6. Step 6: Final answer
   x = 1,317.59