Finding the Fourth Proportional to 3,941.78, 5,914.96 and 1,478.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,941.78 : 5,914.96 = 1,478.31 : x
2. Step 2: Convert to fraction form
   3,941.78/5,914.96 = 1,478.31/x
3. Step 3: Cross multiply
   3,941.78x = 5,914.96 × 1,478.31
4. Step 4: Simplify right side
   3,941.78x = 8,744,144.52
5. Step 5: Solve for x
   x = 8,744,144.52/3,941.78
6. Step 6: Final answer
   x = 2,218.32