Finding the Fourth Proportional to 1,297.02, 1,789.20 and 876.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297.02 : 1,789.20 = 876.82 : x
2. Step 2: Convert to fraction form
   1,297.02/1,789.20 = 876.82/x
3. Step 3: Cross multiply
   1,297.02x = 1,789.20 × 876.82
4. Step 4: Simplify right side
   1,297.02x = 1,568,806.34
5. Step 5: Solve for x
   x = 1,568,806.34/1,297.02
6. Step 6: Final answer
   x = 1,209.55