Finding the Fourth Proportional to 1,584.38, 2,185.78 and 954.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584.38 : 2,185.78 = 954.91 : x
2. Step 2: Convert to fraction form
   1,584.38/2,185.78 = 954.91/x
3. Step 3: Cross multiply
   1,584.38x = 2,185.78 × 954.91
4. Step 4: Simplify right side
   1,584.38x = 2,087,223.18
5. Step 5: Solve for x
   x = 2,087,223.18/1,584.38
6. Step 6: Final answer
   x = 1,317.38