Finding the Fourth Proportional to 1,096.15, 1,641.88 and 887.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.15 : 1,641.88 = 887.02 : x
2. Step 2: Convert to fraction form
   1,096.15/1,641.88 = 887.02/x
3. Step 3: Cross multiply
   1,096.15x = 1,641.88 × 887.02
4. Step 4: Simplify right side
   1,096.15x = 1,456,372.19
5. Step 5: Solve for x
   x = 1,456,372.19/1,096.15
6. Step 6: Final answer
   x = 1,328.63