Finding the Fourth Proportional to 1,520.47, 2,280.86 and 698.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.47 : 2,280.86 = 698.83 : x
2. Step 2: Convert to fraction form
   1,520.47/2,280.86 = 698.83/x
3. Step 3: Cross multiply
   1,520.47x = 2,280.86 × 698.83
4. Step 4: Simplify right side
   1,520.47x = 1,593,926.82
5. Step 5: Solve for x
   x = 1,593,926.82/1,520.47
6. Step 6: Final answer
   x = 1,048.31