Finding the Fourth Proportional to 1,105.63, 1,524.93 and 958

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.63 : 1,524.93 = 958 : x
2. Step 2: Convert to fraction form
   1,105.63/1,524.93 = 958/x
3. Step 3: Cross multiply
   1,105.63x = 1,524.93 × 958
4. Step 4: Simplify right side
   1,105.63x = 1,460,882.94
5. Step 5: Solve for x
   x = 1,460,882.94/1,105.63
6. Step 6: Final answer
   x = 1,321.31