Finding the Fourth Proportional to 1,818.30, 2,726.16 and 722.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.30 : 2,726.16 = 722.34 : x
2. Step 2: Convert to fraction form
   1,818.30/2,726.16 = 722.34/x
3. Step 3: Cross multiply
   1,818.30x = 2,726.16 × 722.34
4. Step 4: Simplify right side
   1,818.30x = 1,969,214.41
5. Step 5: Solve for x
   x = 1,969,214.41/1,818.30
6. Step 6: Final answer
   x = 1,083.00