Finding the Fourth Proportional to 2,323.80, 3,484.72 and 679.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,323.80 : 3,484.72 = 679.98 : x
2. Step 2: Convert to fraction form
   2,323.80/3,484.72 = 679.98/x
3. Step 3: Cross multiply
   2,323.80x = 3,484.72 × 679.98
4. Step 4: Simplify right side
   2,323.80x = 2,369,539.91
5. Step 5: Solve for x
   x = 2,369,539.91/2,323.80
6. Step 6: Final answer
   x = 1,019.68