Finding the Fourth Proportional to 2,109.60, 3,164.37 and 955.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.60 : 3,164.37 = 955.35 : x
2. Step 2: Convert to fraction form
   2,109.60/3,164.37 = 955.35/x
3. Step 3: Cross multiply
   2,109.60x = 3,164.37 × 955.35
4. Step 4: Simplify right side
   2,109.60x = 3,023,080.88
5. Step 5: Solve for x
   x = 3,023,080.88/2,109.60
6. Step 6: Final answer
   x = 1,433.01