Finding the Fourth Proportional to 1,035.31, 1,428.01 and 716.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,035.31 : 1,428.01 = 716.14 : x
2. Step 2: Convert to fraction form
   1,035.31/1,428.01 = 716.14/x
3. Step 3: Cross multiply
   1,035.31x = 1,428.01 × 716.14
4. Step 4: Simplify right side
   1,035.31x = 1,022,659.10
5. Step 5: Solve for x
   x = 1,022,659.10/1,035.31
6. Step 6: Final answer
   x = 987.78