Finding the Fourth Proportional to 3,109.98, 4,663.37 and 918.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.98 : 4,663.37 = 918.43 : x
2. Step 2: Convert to fraction form
   3,109.98/4,663.37 = 918.43/x
3. Step 3: Cross multiply
   3,109.98x = 4,663.37 × 918.43
4. Step 4: Simplify right side
   3,109.98x = 4,282,978.91
5. Step 5: Solve for x
   x = 4,282,978.91/3,109.98
6. Step 6: Final answer
   x = 1,377.17