Finding the Fourth Proportional to 1,375.10, 2,063.31 and 681.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.10 : 2,063.31 = 681.83 : x
2. Step 2: Convert to fraction form
   1,375.10/2,063.31 = 681.83/x
3. Step 3: Cross multiply
   1,375.10x = 2,063.31 × 681.83
4. Step 4: Simplify right side
   1,375.10x = 1,406,826.66
5. Step 5: Solve for x
   x = 1,406,826.66/1,375.10
6. Step 6: Final answer
   x = 1,023.07