Finding the Fourth Proportional to 2,912.63, 4,018.17 and 1,942.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,912.63 : 4,018.17 = 1,942.76 : x
2. Step 2: Convert to fraction form
   2,912.63/4,018.17 = 1,942.76/x
3. Step 3: Cross multiply
   2,912.63x = 4,018.17 × 1,942.76
4. Step 4: Simplify right side
   2,912.63x = 7,806,339.95
5. Step 5: Solve for x
   x = 7,806,339.95/2,912.63
6. Step 6: Final answer
   x = 2,680.17