Finding the Fourth Proportional to 1,816.00, 2,721.60 and 719.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,816.00 : 2,721.60 = 719.76 : x
2. Step 2: Convert to fraction form
   1,816.00/2,721.60 = 719.76/x
3. Step 3: Cross multiply
   1,816.00x = 2,721.60 × 719.76
4. Step 4: Simplify right side
   1,816.00x = 1,958,897.02
5. Step 5: Solve for x
   x = 1,958,897.02/1,816.00
6. Step 6: Final answer
   x = 1,078.69