Finding the Fourth Proportional to 1,949.27, 2,921.55 and 1,431.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,949.27 : 2,921.55 = 1,431.47 : x
2. Step 2: Convert to fraction form
   1,949.27/2,921.55 = 1,431.47/x
3. Step 3: Cross multiply
   1,949.27x = 2,921.55 × 1,431.47
4. Step 4: Simplify right side
   1,949.27x = 4,182,111.18
5. Step 5: Solve for x
   x = 4,182,111.18/1,949.27
6. Step 6: Final answer
   x = 2,145.48