Finding the Fourth Proportional to 1,410.83, 2,116.56 and 681.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.83 : 2,116.56 = 681.02 : x
2. Step 2: Convert to fraction form
   1,410.83/2,116.56 = 681.02/x
3. Step 3: Cross multiply
   1,410.83x = 2,116.56 × 681.02
4. Step 4: Simplify right side
   1,410.83x = 1,441,419.69
5. Step 5: Solve for x
   x = 1,441,419.69/1,410.83
6. Step 6: Final answer
   x = 1,021.68