Finding the Fourth Proportional to 2,056.50, 3,085.16 and 902.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.50 : 3,085.16 = 902.25 : x
2. Step 2: Convert to fraction form
   2,056.50/3,085.16 = 902.25/x
3. Step 3: Cross multiply
   2,056.50x = 3,085.16 × 902.25
4. Step 4: Simplify right side
   2,056.50x = 2,783,581.10
5. Step 5: Solve for x
   x = 2,783,581.10/2,056.50
6. Step 6: Final answer
   x = 1,353.55