Finding the Fourth Proportional to 1,083.83, 1,495.31 and 611.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.83 : 1,495.31 = 611.67 : x
2. Step 2: Convert to fraction form
   1,083.83/1,495.31 = 611.67/x
3. Step 3: Cross multiply
   1,083.83x = 1,495.31 × 611.67
4. Step 4: Simplify right side
   1,083.83x = 914,628.79
5. Step 5: Solve for x
   x = 914,628.79/1,083.83
6. Step 6: Final answer
   x = 843.89