Finding the Fourth Proportional to 1,196.57, 1,649.77 and 881.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.57 : 1,649.77 = 881.28 : x
2. Step 2: Convert to fraction form
   1,196.57/1,649.77 = 881.28/x
3. Step 3: Cross multiply
   1,196.57x = 1,649.77 × 881.28
4. Step 4: Simplify right side
   1,196.57x = 1,453,907.10
5. Step 5: Solve for x
   x = 1,453,907.10/1,196.57
6. Step 6: Final answer
   x = 1,215.06