Finding the Fourth Proportional to 1,843.47, 2,543.94 and 1,057.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,843.47 : 2,543.94 = 1,057.50 : x
2. Step 2: Convert to fraction form
   1,843.47/2,543.94 = 1,057.50/x
3. Step 3: Cross multiply
   1,843.47x = 2,543.94 × 1,057.50
4. Step 4: Simplify right side
   1,843.47x = 2,690,216.55
5. Step 5: Solve for x
   x = 2,690,216.55/1,843.47
6. Step 6: Final answer
   x = 1,459.32