Finding the Fourth Proportional to 2,137.96, 3,205.72 and 887.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137.96 : 3,205.72 = 887.73 : x
2. Step 2: Convert to fraction form
   2,137.96/3,205.72 = 887.73/x
3. Step 3: Cross multiply
   2,137.96x = 3,205.72 × 887.73
4. Step 4: Simplify right side
   2,137.96x = 2,845,813.82
5. Step 5: Solve for x
   x = 2,845,813.82/2,137.96
6. Step 6: Final answer
   x = 1,331.09