Finding the Fourth Proportional to 1,300.26, 1,794.30 and 710.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.26 : 1,794.30 = 710.78 : x
2. Step 2: Convert to fraction form
   1,300.26/1,794.30 = 710.78/x
3. Step 3: Cross multiply
   1,300.26x = 1,794.30 × 710.78
4. Step 4: Simplify right side
   1,300.26x = 1,275,343.58
5. Step 5: Solve for x
   x = 1,275,343.58/1,300.26
6. Step 6: Final answer
   x = 980.84