Finding the Fourth Proportional to 1,828.89, 2,741.70 and 1,211.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,828.89 : 2,741.70 = 1,211.31 : x
2. Step 2: Convert to fraction form
   1,828.89/2,741.70 = 1,211.31/x
3. Step 3: Cross multiply
   1,828.89x = 2,741.70 × 1,211.31
4. Step 4: Simplify right side
   1,828.89x = 3,321,048.63
5. Step 5: Solve for x
   x = 3,321,048.63/1,828.89
6. Step 6: Final answer
   x = 1,815.88