Finding the Fourth Proportional to 1,553.97, 2,144.53 and 845.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553.97 : 2,144.53 = 845.86 : x
2. Step 2: Convert to fraction form
   1,553.97/2,144.53 = 845.86/x
3. Step 3: Cross multiply
   1,553.97x = 2,144.53 × 845.86
4. Step 4: Simplify right side
   1,553.97x = 1,813,979.32
5. Step 5: Solve for x
   x = 1,813,979.32/1,553.97
6. Step 6: Final answer
   x = 1,167.32