Finding the Fourth Proportional to 3,131.83, 4,696.56 and 939.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.83 : 4,696.56 = 939.82 : x
2. Step 2: Convert to fraction form
   3,131.83/4,696.56 = 939.82/x
3. Step 3: Cross multiply
   3,131.83x = 4,696.56 × 939.82
4. Step 4: Simplify right side
   3,131.83x = 4,413,921.02
5. Step 5: Solve for x
   x = 4,413,921.02/3,131.83
6. Step 6: Final answer
   x = 1,409.37