Finding the Fourth Proportional to 1,389.58, 2,083.83 and 695.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389.58 : 2,083.83 = 695.86 : x
2. Step 2: Convert to fraction form
   1,389.58/2,083.83 = 695.86/x
3. Step 3: Cross multiply
   1,389.58x = 2,083.83 × 695.86
4. Step 4: Simplify right side
   1,389.58x = 1,450,053.94
5. Step 5: Solve for x
   x = 1,450,053.94/1,389.58
6. Step 6: Final answer
   x = 1,043.52