Finding the Fourth Proportional to 2,123.31, 3,185.16 and 563.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.31 : 3,185.16 = 563.31 : x
2. Step 2: Convert to fraction form
   2,123.31/3,185.16 = 563.31/x
3. Step 3: Cross multiply
   2,123.31x = 3,185.16 × 563.31
4. Step 4: Simplify right side
   2,123.31x = 1,794,232.48
5. Step 5: Solve for x
   x = 1,794,232.48/2,123.31
6. Step 6: Final answer
   x = 845.02