Finding the Fourth Proportional to 2,119.20, 2,921.72 and 1,454.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,119.20 : 2,921.72 = 1,454.90 : x
2. Step 2: Convert to fraction form
   2,119.20/2,921.72 = 1,454.90/x
3. Step 3: Cross multiply
   2,119.20x = 2,921.72 × 1,454.90
4. Step 4: Simplify right side
   2,119.20x = 4,250,810.43
5. Step 5: Solve for x
   x = 4,250,810.43/2,119.20
6. Step 6: Final answer
   x = 2,005.86