Finding the Fourth Proportional to 2,109.75, 3,165.03 and 955.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.75 : 3,165.03 = 955.50 : x
2. Step 2: Convert to fraction form
   2,109.75/3,165.03 = 955.50/x
3. Step 3: Cross multiply
   2,109.75x = 3,165.03 × 955.50
4. Step 4: Simplify right side
   2,109.75x = 3,024,186.17
5. Step 5: Solve for x
   x = 3,024,186.17/2,109.75
6. Step 6: Final answer
   x = 1,433.43