Finding the Fourth Proportional to 1,639.82, 2,262.89 and 893.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,639.82 : 2,262.89 = 893.76 : x
2. Step 2: Convert to fraction form
   1,639.82/2,262.89 = 893.76/x
3. Step 3: Cross multiply
   1,639.82x = 2,262.89 × 893.76
4. Step 4: Simplify right side
   1,639.82x = 2,022,476.10
5. Step 5: Solve for x
   x = 2,022,476.10/1,639.82
6. Step 6: Final answer
   x = 1,233.36