Finding the Fourth Proportional to 1,300.56, 1,794.72 and 776.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.56 : 1,794.72 = 776.88 : x
2. Step 2: Convert to fraction form
   1,300.56/1,794.72 = 776.88/x
3. Step 3: Cross multiply
   1,300.56x = 1,794.72 × 776.88
4. Step 4: Simplify right side
   1,300.56x = 1,394,282.07
5. Step 5: Solve for x
   x = 1,394,282.07/1,300.56
6. Step 6: Final answer
   x = 1,072.06