Finding the Fourth Proportional to 2,138.89, 2,951.90 and 1,254.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138.89 : 2,951.90 = 1,254.82 : x
2. Step 2: Convert to fraction form
   2,138.89/2,951.90 = 1,254.82/x
3. Step 3: Cross multiply
   2,138.89x = 2,951.90 × 1,254.82
4. Step 4: Simplify right side
   2,138.89x = 3,704,103.16
5. Step 5: Solve for x
   x = 3,704,103.16/2,138.89
6. Step 6: Final answer
   x = 1,731.79