Finding the Fourth Proportional to 1,942.18, 2,680.22 and 1,057.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.18 : 2,680.22 = 1,057.96 : x
2. Step 2: Convert to fraction form
   1,942.18/2,680.22 = 1,057.96/x
3. Step 3: Cross multiply
   1,942.18x = 2,680.22 × 1,057.96
4. Step 4: Simplify right side
   1,942.18x = 2,835,571.55
5. Step 5: Solve for x
   x = 2,835,571.55/1,942.18
6. Step 6: Final answer
   x = 1,460.00