Finding the Fourth Proportional to 1,372.43, 2,057.28 and 885.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.43 : 2,057.28 = 885.82 : x
2. Step 2: Convert to fraction form
   1,372.43/2,057.28 = 885.82/x
3. Step 3: Cross multiply
   1,372.43x = 2,057.28 × 885.82
4. Step 4: Simplify right side
   1,372.43x = 1,822,379.77
5. Step 5: Solve for x
   x = 1,822,379.77/1,372.43
6. Step 6: Final answer
   x = 1,327.85