Finding the Fourth Proportional to 1,505.30, 2,261.59 and 958.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,505.30 : 2,261.59 = 958.55 : x
2. Step 2: Convert to fraction form
   1,505.30/2,261.59 = 958.55/x
3. Step 3: Cross multiply
   1,505.30x = 2,261.59 × 958.55
4. Step 4: Simplify right side
   1,505.30x = 2,167,833.39
5. Step 5: Solve for x
   x = 2,167,833.39/1,505.30
6. Step 6: Final answer
   x = 1,440.14