Finding the Fourth Proportional to 2,499.05, 3,751.11 and 1,039.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.05 : 3,751.11 = 1,039.23 : x
2. Step 2: Convert to fraction form
   2,499.05/3,751.11 = 1,039.23/x
3. Step 3: Cross multiply
   2,499.05x = 3,751.11 × 1,039.23
4. Step 4: Simplify right side
   2,499.05x = 3,898,266.05
5. Step 5: Solve for x
   x = 3,898,266.05/2,499.05
6. Step 6: Final answer
   x = 1,559.90