Finding the Fourth Proportional to 1,941.57, 2,679.40 and 1,057.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,941.57 : 2,679.40 = 1,057.37 : x
2. Step 2: Convert to fraction form
   1,941.57/2,679.40 = 1,057.37/x
3. Step 3: Cross multiply
   1,941.57x = 2,679.40 × 1,057.37
4. Step 4: Simplify right side
   1,941.57x = 2,833,111.89
5. Step 5: Solve for x
   x = 2,833,111.89/1,941.57
6. Step 6: Final answer
   x = 1,459.19