Finding the Fourth Proportional to 2,553.60, 3,522.81 and 1,608.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.60 : 3,522.81 = 1,608.74 : x
2. Step 2: Convert to fraction form
   2,553.60/3,522.81 = 1,608.74/x
3. Step 3: Cross multiply
   2,553.60x = 3,522.81 × 1,608.74
4. Step 4: Simplify right side
   2,553.60x = 5,667,267.75
5. Step 5: Solve for x
   x = 5,667,267.75/2,553.60
6. Step 6: Final answer
   x = 2,219.32