Finding the Fourth Proportional to 2,535.56, 3,803.39 and 870.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,535.56 : 3,803.39 = 870.07 : x
2. Step 2: Convert to fraction form
   2,535.56/3,803.39 = 870.07/x
3. Step 3: Cross multiply
   2,535.56x = 3,803.39 × 870.07
4. Step 4: Simplify right side
   2,535.56x = 3,309,215.54
5. Step 5: Solve for x
   x = 3,309,215.54/2,535.56
6. Step 6: Final answer
   x = 1,305.12