Finding the Fourth Proportional to 1,520.76, 2,279.34 and 698.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.76 : 2,279.34 = 698.34 : x
2. Step 2: Convert to fraction form
   1,520.76/2,279.34 = 698.34/x
3. Step 3: Cross multiply
   1,520.76x = 2,279.34 × 698.34
4. Step 4: Simplify right side
   1,520.76x = 1,591,754.30
5. Step 5: Solve for x
   x = 1,591,754.30/1,520.76
6. Step 6: Final answer
   x = 1,046.68