Finding the Fourth Proportional to 1,389.30, 2,084.61 and 696.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389.30 : 2,084.61 = 696.03 : x
2. Step 2: Convert to fraction form
   1,389.30/2,084.61 = 696.03/x
3. Step 3: Cross multiply
   1,389.30x = 2,084.61 × 696.03
4. Step 4: Simplify right side
   1,389.30x = 1,450,951.10
5. Step 5: Solve for x
   x = 1,450,951.10/1,389.30
6. Step 6: Final answer
   x = 1,044.38