Finding the Fourth Proportional to 2,503.85, 3,455.61 and 1,455.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,503.85 : 3,455.61 = 1,455.91 : x
2. Step 2: Convert to fraction form
   2,503.85/3,455.61 = 1,455.91/x
3. Step 3: Cross multiply
   2,503.85x = 3,455.61 × 1,455.91
4. Step 4: Simplify right side
   2,503.85x = 5,031,057.16
5. Step 5: Solve for x
   x = 5,031,057.16/2,503.85
6. Step 6: Final answer
   x = 2,009.33