Finding the Fourth Proportional to 2,154.73, 2,972.48 and 1,408.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.73 : 2,972.48 = 1,408.72 : x
2. Step 2: Convert to fraction form
   2,154.73/2,972.48 = 1,408.72/x
3. Step 3: Cross multiply
   2,154.73x = 2,972.48 × 1,408.72
4. Step 4: Simplify right side
   2,154.73x = 4,187,377.55
5. Step 5: Solve for x
   x = 4,187,377.55/2,154.73
6. Step 6: Final answer
   x = 1,943.34