Finding the Fourth Proportional to 1,389.51, 2,084.72 and 1,196.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389.51 : 2,084.72 = 1,196.33 : x
2. Step 2: Convert to fraction form
   1,389.51/2,084.72 = 1,196.33/x
3. Step 3: Cross multiply
   1,389.51x = 2,084.72 × 1,196.33
4. Step 4: Simplify right side
   1,389.51x = 2,493,996.67
5. Step 5: Solve for x
   x = 2,493,996.67/1,389.51
6. Step 6: Final answer
   x = 1,794.87