Finding the Fourth Proportional to 2,500.81, 3,749.63 and 1,330.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.81 : 3,749.63 = 1,330.09 : x
2. Step 2: Convert to fraction form
   2,500.81/3,749.63 = 1,330.09/x
3. Step 3: Cross multiply
   2,500.81x = 3,749.63 × 1,330.09
4. Step 4: Simplify right side
   2,500.81x = 4,987,329.34
5. Step 5: Solve for x
   x = 4,987,329.34/2,500.81
6. Step 6: Final answer
   x = 1,994.29