Finding the Fourth Proportional to 2,512.12, 3,767.86 and 663.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,512.12 : 3,767.86 = 663.38 : x
2. Step 2: Convert to fraction form
   2,512.12/3,767.86 = 663.38/x
3. Step 3: Cross multiply
   2,512.12x = 3,767.86 × 663.38
4. Step 4: Simplify right side
   2,512.12x = 2,499,500.81
5. Step 5: Solve for x
   x = 2,499,500.81/2,512.12
6. Step 6: Final answer
   x = 994.98