Finding the Fourth Proportional to 1,104.86, 1,520.89 and 955.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,104.86 : 1,520.89 = 955.42 : x
2. Step 2: Convert to fraction form
   1,104.86/1,520.89 = 955.42/x
3. Step 3: Cross multiply
   1,104.86x = 1,520.89 × 955.42
4. Step 4: Simplify right side
   1,104.86x = 1,453,088.72
5. Step 5: Solve for x
   x = 1,453,088.72/1,104.86
6. Step 6: Final answer
   x = 1,315.18