Finding the Fourth Proportional to 3,540.98, 5,310.87 and 943.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,540.98 : 5,310.87 = 943.31 : x
2. Step 2: Convert to fraction form
   3,540.98/5,310.87 = 943.31/x
3. Step 3: Cross multiply
   3,540.98x = 5,310.87 × 943.31
4. Step 4: Simplify right side
   3,540.98x = 5,009,806.52
5. Step 5: Solve for x
   x = 5,009,806.52/3,540.98
6. Step 6: Final answer
   x = 1,414.81