Finding the Fourth Proportional to 1,942.06, 2,680.03 and 1,057.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.06 : 2,680.03 = 1,057.86 : x
2. Step 2: Convert to fraction form
   1,942.06/2,680.03 = 1,057.86/x
3. Step 3: Cross multiply
   1,942.06x = 2,680.03 × 1,057.86
4. Step 4: Simplify right side
   1,942.06x = 2,835,094.54
5. Step 5: Solve for x
   x = 2,835,094.54/1,942.06
6. Step 6: Final answer
   x = 1,459.84