Finding the Fourth Proportional to 1,818.24, 2,728.72 and 707.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.24 : 2,728.72 = 707.83 : x
2. Step 2: Convert to fraction form
   1,818.24/2,728.72 = 707.83/x
3. Step 3: Cross multiply
   1,818.24x = 2,728.72 × 707.83
4. Step 4: Simplify right side
   1,818.24x = 1,931,479.29
5. Step 5: Solve for x
   x = 1,931,479.29/1,818.24
6. Step 6: Final answer
   x = 1,062.28