Finding the Fourth Proportional to 1,941.98, 2,679.94 and 1,057.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,941.98 : 2,679.94 = 1,057.78 : x
2. Step 2: Convert to fraction form
   1,941.98/2,679.94 = 1,057.78/x
3. Step 3: Cross multiply
   1,941.98x = 2,679.94 × 1,057.78
4. Step 4: Simplify right side
   1,941.98x = 2,834,791.61
5. Step 5: Solve for x
   x = 2,834,791.61/1,941.98
6. Step 6: Final answer
   x = 1,459.74