Finding the Fourth Proportional to 1,185.12, 1,635.03 and 743.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.12 : 1,635.03 = 743.31 : x
2. Step 2: Convert to fraction form
   1,185.12/1,635.03 = 743.31/x
3. Step 3: Cross multiply
   1,185.12x = 1,635.03 × 743.31
4. Step 4: Simplify right side
   1,185.12x = 1,215,334.15
5. Step 5: Solve for x
   x = 1,215,334.15/1,185.12
6. Step 6: Final answer
   x = 1,025.49