Finding the Fourth Proportional to 1,601.55, 2,405.30 and 956.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.55 : 2,405.30 = 956.25 : x
2. Step 2: Convert to fraction form
   1,601.55/2,405.30 = 956.25/x
3. Step 3: Cross multiply
   1,601.55x = 2,405.30 × 956.25
4. Step 4: Simplify right side
   1,601.55x = 2,300,063.34
5. Step 5: Solve for x
   x = 2,300,063.34/1,601.55
6. Step 6: Final answer
   x = 1,436.15