Finding the Fourth Proportional to 2,663.16, 3,992.46 and 1,018.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.16 : 3,992.46 = 1,018.55 : x
2. Step 2: Convert to fraction form
   2,663.16/3,992.46 = 1,018.55/x
3. Step 3: Cross multiply
   2,663.16x = 3,992.46 × 1,018.55
4. Step 4: Simplify right side
   2,663.16x = 4,066,526.29
5. Step 5: Solve for x
   x = 4,066,526.29/2,663.16
6. Step 6: Final answer
   x = 1,526.96