Finding the Fourth Proportional to 1,828.80, 2,736.72 and 1,243.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,828.80 : 2,736.72 = 1,243.86 : x
2. Step 2: Convert to fraction form
   1,828.80/2,736.72 = 1,243.86/x
3. Step 3: Cross multiply
   1,828.80x = 2,736.72 × 1,243.86
4. Step 4: Simplify right side
   1,828.80x = 3,404,096.54
5. Step 5: Solve for x
   x = 3,404,096.54/1,828.80
6. Step 6: Final answer
   x = 1,861.38