Finding the Fourth Proportional to 2,109.76, 3,162.72 and 955.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.76 : 3,162.72 = 955.04 : x
2. Step 2: Convert to fraction form
   2,109.76/3,162.72 = 955.04/x
3. Step 3: Cross multiply
   2,109.76x = 3,162.72 × 955.04
4. Step 4: Simplify right side
   2,109.76x = 3,020,524.11
5. Step 5: Solve for x
   x = 3,020,524.11/2,109.76
6. Step 6: Final answer
   x = 1,431.69