Finding the Fourth Proportional to 1,304.04, 1,799.52 and 780.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,304.04 : 1,799.52 = 780.24 : x
2. Step 2: Convert to fraction form
   1,304.04/1,799.52 = 780.24/x
3. Step 3: Cross multiply
   1,304.04x = 1,799.52 × 780.24
4. Step 4: Simplify right side
   1,304.04x = 1,404,057.48
5. Step 5: Solve for x
   x = 1,404,057.48/1,304.04
6. Step 6: Final answer
   x = 1,076.70