Finding the Fourth Proportional to 1,082.76, 1,493.06 and 872.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.76 : 1,493.06 = 872.72 : x
2. Step 2: Convert to fraction form
   1,082.76/1,493.06 = 872.72/x
3. Step 3: Cross multiply
   1,082.76x = 1,493.06 × 872.72
4. Step 4: Simplify right side
   1,082.76x = 1,303,011.49
5. Step 5: Solve for x
   x = 1,303,011.49/1,082.76
6. Step 6: Final answer
   x = 1,203.42