Finding the Fourth Proportional to 3,108.31, 4,662.42 and 918.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,108.31 : 4,662.42 = 918.52 : x
2. Step 2: Convert to fraction form
   3,108.31/4,662.42 = 918.52/x
3. Step 3: Cross multiply
   3,108.31x = 4,662.42 × 918.52
4. Step 4: Simplify right side
   3,108.31x = 4,282,526.02
5. Step 5: Solve for x
   x = 4,282,526.02/3,108.31
6. Step 6: Final answer
   x = 1,377.77