Finding the Fourth Proportional to 1,428.96, 1,969.56 and 1,030.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428.96 : 1,969.56 = 1,030.08 : x
2. Step 2: Convert to fraction form
   1,428.96/1,969.56 = 1,030.08/x
3. Step 3: Cross multiply
   1,428.96x = 1,969.56 × 1,030.08
4. Step 4: Simplify right side
   1,428.96x = 2,028,804.36
5. Step 5: Solve for x
   x = 2,028,804.36/1,428.96
6. Step 6: Final answer
   x = 1,419.78