Finding the Fourth Proportional to 1,843.30, 2,543.71 and 1,057.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,843.30 : 2,543.71 = 1,057.30 : x
2. Step 2: Convert to fraction form
   1,843.30/2,543.71 = 1,057.30/x
3. Step 3: Cross multiply
   1,843.30x = 2,543.71 × 1,057.30
4. Step 4: Simplify right side
   1,843.30x = 2,689,451.86
5. Step 5: Solve for x
   x = 2,689,451.86/1,843.30
6. Step 6: Final answer
   x = 1,459.04