Finding the Fourth Proportional to 2,647.32, 3,652.56 and 2,086.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.32 : 3,652.56 = 2,086.05 : x
2. Step 2: Convert to fraction form
   2,647.32/3,652.56 = 2,086.05/x
3. Step 3: Cross multiply
   2,647.32x = 3,652.56 × 2,086.05
4. Step 4: Simplify right side
   2,647.32x = 7,619,409.09
5. Step 5: Solve for x
   x = 7,619,409.09/2,647.32
6. Step 6: Final answer
   x = 2,878.16