Finding the Fourth Proportional to 1,843.98, 2,543.82 and 1,057.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,843.98 : 2,543.82 = 1,057.57 : x
2. Step 2: Convert to fraction form
   1,843.98/2,543.82 = 1,057.57/x
3. Step 3: Cross multiply
   1,843.98x = 2,543.82 × 1,057.57
4. Step 4: Simplify right side
   1,843.98x = 2,690,267.72
5. Step 5: Solve for x
   x = 2,690,267.72/1,843.98
6. Step 6: Final answer
   x = 1,458.95