Finding the Fourth Proportional to 2,112.89, 3,169.04 and 553.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.89 : 3,169.04 = 553.01 : x
2. Step 2: Convert to fraction form
   2,112.89/3,169.04 = 553.01/x
3. Step 3: Cross multiply
   2,112.89x = 3,169.04 × 553.01
4. Step 4: Simplify right side
   2,112.89x = 1,752,492.20
5. Step 5: Solve for x
   x = 1,752,492.20/2,112.89
6. Step 6: Final answer
   x = 829.43