Finding the Fourth Proportional to 1,585.83, 2,188.59 and 956.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,585.83 : 2,188.59 = 956.67 : x
2. Step 2: Convert to fraction form
   1,585.83/2,188.59 = 956.67/x
3. Step 3: Cross multiply
   1,585.83x = 2,188.59 × 956.67
4. Step 4: Simplify right side
   1,585.83x = 2,093,758.40
5. Step 5: Solve for x
   x = 2,093,758.40/1,585.83
6. Step 6: Final answer
   x = 1,320.29