Finding the Fourth Proportional to 2,185.80, 3,275.60 and 1,535.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.80 : 3,275.60 = 1,535.16 : x
2. Step 2: Convert to fraction form
   2,185.80/3,275.60 = 1,535.16/x
3. Step 3: Cross multiply
   2,185.80x = 3,275.60 × 1,535.16
4. Step 4: Simplify right side
   2,185.80x = 5,028,570.10
5. Step 5: Solve for x
   x = 5,028,570.10/2,185.80
6. Step 6: Final answer
   x = 2,300.56