Finding the Fourth Proportional to 1,621.96, 2,237.86 and 958.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.96 : 2,237.86 = 958.52 : x
2. Step 2: Convert to fraction form
   1,621.96/2,237.86 = 958.52/x
3. Step 3: Cross multiply
   1,621.96x = 2,237.86 × 958.52
4. Step 4: Simplify right side
   1,621.96x = 2,145,033.57
5. Step 5: Solve for x
   x = 2,145,033.57/1,621.96
6. Step 6: Final answer
   x = 1,322.49