Finding the Fourth Proportional to 2,179.05, 3,009.29 and 1,433.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.05 : 3,009.29 = 1,433.55 : x
2. Step 2: Convert to fraction form
   2,179.05/3,009.29 = 1,433.55/x
3. Step 3: Cross multiply
   2,179.05x = 3,009.29 × 1,433.55
4. Step 4: Simplify right side
   2,179.05x = 4,313,960.51
5. Step 5: Solve for x
   x = 4,313,960.51/2,179.05
6. Step 6: Final answer
   x = 1,979.74