Finding the Fourth Proportional to 1,300.20, 1,794.30 and 710.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.20 : 1,794.30 = 710.79 : x
2. Step 2: Convert to fraction form
   1,300.20/1,794.30 = 710.79/x
3. Step 3: Cross multiply
   1,300.20x = 1,794.30 × 710.79
4. Step 4: Simplify right side
   1,300.20x = 1,275,370.50
5. Step 5: Solve for x
   x = 1,275,370.50/1,300.20
6. Step 6: Final answer
   x = 980.90