Finding the Fourth Proportional to 2,663.78, 3,995.53 and 716.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.78 : 3,995.53 = 716.00 : x
2. Step 2: Convert to fraction form
   2,663.78/3,995.53 = 716.00/x
3. Step 3: Cross multiply
   2,663.78x = 3,995.53 × 716.00
4. Step 4: Simplify right side
   2,663.78x = 2,860,777.71
5. Step 5: Solve for x
   x = 2,860,777.71/2,663.78
6. Step 6: Final answer
   x = 1,073.96