Finding the Fourth Proportional to 1,300.25, 1,794.33 and 710.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.25 : 1,794.33 = 710.78 : x
2. Step 2: Convert to fraction form
   1,300.25/1,794.33 = 710.78/x
3. Step 3: Cross multiply
   1,300.25x = 1,794.33 × 710.78
4. Step 4: Simplify right side
   1,300.25x = 1,275,373.88
5. Step 5: Solve for x
   x = 1,275,373.88/1,300.25
6. Step 6: Final answer
   x = 980.87