Finding the Fourth Proportional to 2,124.01, 3,186.56 and 663.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.01 : 3,186.56 = 663.18 : x
2. Step 2: Convert to fraction form
   2,124.01/3,186.56 = 663.18/x
3. Step 3: Cross multiply
   2,124.01x = 3,186.56 × 663.18
4. Step 4: Simplify right side
   2,124.01x = 2,113,262.86
5. Step 5: Solve for x
   x = 2,113,262.86/2,124.01
6. Step 6: Final answer
   x = 994.94