Finding the Fourth Proportional to 1,375.56, 2,062.42 and 682.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.56 : 2,062.42 = 682.55 : x
2. Step 2: Convert to fraction form
   1,375.56/2,062.42 = 682.55/x
3. Step 3: Cross multiply
   1,375.56x = 2,062.42 × 682.55
4. Step 4: Simplify right side
   1,375.56x = 1,407,704.77
5. Step 5: Solve for x
   x = 1,407,704.77/1,375.56
6. Step 6: Final answer
   x = 1,023.37