Finding the Fourth Proportional to 1,428.41, 1,969.27 and 1,002.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428.41 : 1,969.27 = 1,002.46 : x
2. Step 2: Convert to fraction form
   1,428.41/1,969.27 = 1,002.46/x
3. Step 3: Cross multiply
   1,428.41x = 1,969.27 × 1,002.46
4. Step 4: Simplify right side
   1,428.41x = 1,974,105.13
5. Step 5: Solve for x
   x = 1,974,105.13/1,428.41
6. Step 6: Final answer
   x = 1,382.03