Finding the Fourth Proportional to 2,191.08, 3,287.34 and 1,036.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.08 : 3,287.34 = 1,036.56 : x
2. Step 2: Convert to fraction form
   2,191.08/3,287.34 = 1,036.56/x
3. Step 3: Cross multiply
   2,191.08x = 3,287.34 × 1,036.56
4. Step 4: Simplify right side
   2,191.08x = 3,407,525.15
5. Step 5: Solve for x
   x = 3,407,525.15/2,191.08
6. Step 6: Final answer
   x = 1,555.18