Finding the Fourth Proportional to 1,843.32, 2,543.72 and 1,057.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,843.32 : 2,543.72 = 1,057.34 : x
2. Step 2: Convert to fraction form
   1,843.32/2,543.72 = 1,057.34/x
3. Step 3: Cross multiply
   1,843.32x = 2,543.72 × 1,057.34
4. Step 4: Simplify right side
   1,843.32x = 2,689,576.90
5. Step 5: Solve for x
   x = 2,689,576.90/1,843.32
6. Step 6: Final answer
   x = 1,459.09