Finding the Fourth Proportional to 1,834.31, 2,752.83 and 861.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,834.31 : 2,752.83 = 861.09 : x
2. Step 2: Convert to fraction form
   1,834.31/2,752.83 = 861.09/x
3. Step 3: Cross multiply
   1,834.31x = 2,752.83 × 861.09
4. Step 4: Simplify right side
   1,834.31x = 2,370,434.38
5. Step 5: Solve for x
   x = 2,370,434.38/1,834.31
6. Step 6: Final answer
   x = 1,292.28