Finding the Fourth Proportional to 1,568.83, 2,164.83 and 905.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,568.83 : 2,164.83 = 905.86 : x
2. Step 2: Convert to fraction form
   1,568.83/2,164.83 = 905.86/x
3. Step 3: Cross multiply
   1,568.83x = 2,164.83 × 905.86
4. Step 4: Simplify right side
   1,568.83x = 1,961,032.90
5. Step 5: Solve for x
   x = 1,961,032.90/1,568.83
6. Step 6: Final answer
   x = 1,250.00