Finding the Fourth Proportional to 1,083.31, 1,494.62 and 611.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.31 : 1,494.62 = 611.15 : x
2. Step 2: Convert to fraction form
   1,083.31/1,494.62 = 611.15/x
3. Step 3: Cross multiply
   1,083.31x = 1,494.62 × 611.15
4. Step 4: Simplify right side
   1,083.31x = 913,428.78
5. Step 5: Solve for x
   x = 913,428.78/1,083.31
6. Step 6: Final answer
   x = 843.19