Finding the Fourth Proportional to 2,528.61, 3,793.82 and 885.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.61 : 3,793.82 = 885.39 : x
2. Step 2: Convert to fraction form
   2,528.61/3,793.82 = 885.39/x
3. Step 3: Cross multiply
   2,528.61x = 3,793.82 × 885.39
4. Step 4: Simplify right side
   2,528.61x = 3,359,010.29
5. Step 5: Solve for x
   x = 3,359,010.29/2,528.61
6. Step 6: Final answer
   x = 1,328.40