Finding the Fourth Proportional to 2,663.04, 3,990.96 and 1,361.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.04 : 3,990.96 = 1,361.76 : x
2. Step 2: Convert to fraction form
   2,663.04/3,990.96 = 1,361.76/x
3. Step 3: Cross multiply
   2,663.04x = 3,990.96 × 1,361.76
4. Step 4: Simplify right side
   2,663.04x = 5,434,729.69
5. Step 5: Solve for x
   x = 5,434,729.69/2,663.04
6. Step 6: Final answer
   x = 2,040.80