Finding the Fourth Proportional to 2,075.42, 3,105.44 and 1,663.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.42 : 3,105.44 = 1,663.31 : x
2. Step 2: Convert to fraction form
   2,075.42/3,105.44 = 1,663.31/x
3. Step 3: Cross multiply
   2,075.42x = 3,105.44 × 1,663.31
4. Step 4: Simplify right side
   2,075.42x = 5,165,285.56
5. Step 5: Solve for x
   x = 5,165,285.56/2,075.42
6. Step 6: Final answer
   x = 2,488.80