Finding the Fourth Proportional to 2,525.69, 3,789.86 and 1,909.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,525.69 : 3,789.86 = 1,909.22 : x
2. Step 2: Convert to fraction form
   2,525.69/3,789.86 = 1,909.22/x
3. Step 3: Cross multiply
   2,525.69x = 3,789.86 × 1,909.22
4. Step 4: Simplify right side
   2,525.69x = 7,235,648.01
5. Step 5: Solve for x
   x = 7,235,648.01/2,525.69
6. Step 6: Final answer
   x = 2,864.82