Finding the Fourth Proportional to 1,818.31, 2,723.89 and 1,200.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.31 : 2,723.89 = 1,200.13 : x
2. Step 2: Convert to fraction form
   1,818.31/2,723.89 = 1,200.13/x
3. Step 3: Cross multiply
   1,818.31x = 2,723.89 × 1,200.13
4. Step 4: Simplify right side
   1,818.31x = 3,269,018.30
5. Step 5: Solve for x
   x = 3,269,018.30/1,818.31
6. Step 6: Final answer
   x = 1,797.83