Finding the Fourth Proportional to 1,905.62, 2,854.38 and 1,083.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,905.62 : 2,854.38 = 1,083.47 : x
2. Step 2: Convert to fraction form
   1,905.62/2,854.38 = 1,083.47/x
3. Step 3: Cross multiply
   1,905.62x = 2,854.38 × 1,083.47
4. Step 4: Simplify right side
   1,905.62x = 3,092,635.10
5. Step 5: Solve for x
   x = 3,092,635.10/1,905.62
6. Step 6: Final answer
   x = 1,622.90