Finding the Fourth Proportional to 2,525.09, 3,788.58 and 1,139.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,525.09 : 3,788.58 = 1,139.07 : x
2. Step 2: Convert to fraction form
   2,525.09/3,788.58 = 1,139.07/x
3. Step 3: Cross multiply
   2,525.09x = 3,788.58 × 1,139.07
4. Step 4: Simplify right side
   2,525.09x = 4,315,457.82
5. Step 5: Solve for x
   x = 4,315,457.82/2,525.09
6. Step 6: Final answer
   x = 1,709.03