Finding the Fourth Proportional to 2,039.20, 2,809.89 and 1,567.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.20 : 2,809.89 = 1,567.07 : x
2. Step 2: Convert to fraction form
   2,039.20/2,809.89 = 1,567.07/x
3. Step 3: Cross multiply
   2,039.20x = 2,809.89 × 1,567.07
4. Step 4: Simplify right side
   2,039.20x = 4,403,290.81
5. Step 5: Solve for x
   x = 4,403,290.81/2,039.20
6. Step 6: Final answer
   x = 2,159.33