Finding the Fourth Proportional to 2,503.86, 3,454.82 and 1,509.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,503.86 : 3,454.82 = 1,509.20 : x
2. Step 2: Convert to fraction form
   2,503.86/3,454.82 = 1,509.20/x
3. Step 3: Cross multiply
   2,503.86x = 3,454.82 × 1,509.20
4. Step 4: Simplify right side
   2,503.86x = 5,214,008.14
5. Step 5: Solve for x
   x = 5,214,008.14/2,503.86
6. Step 6: Final answer
   x = 2,082.39