Finding the Fourth Proportional to 1,196.06, 1,790.43 and 887.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.06 : 1,790.43 = 887.15 : x
2. Step 2: Convert to fraction form
   1,196.06/1,790.43 = 887.15/x
3. Step 3: Cross multiply
   1,196.06x = 1,790.43 × 887.15
4. Step 4: Simplify right side
   1,196.06x = 1,588,371.02
5. Step 5: Solve for x
   x = 1,588,371.02/1,196.06
6. Step 6: Final answer
   x = 1,328.01