Finding the Fourth Proportional to 2,221.81, 3,329.06 and 760.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.81 : 3,329.06 = 760.16 : x
2. Step 2: Convert to fraction form
   2,221.81/3,329.06 = 760.16/x
3. Step 3: Cross multiply
   2,221.81x = 3,329.06 × 760.16
4. Step 4: Simplify right side
   2,221.81x = 2,530,614.45
5. Step 5: Solve for x
   x = 2,530,614.45/2,221.81
6. Step 6: Final answer
   x = 1,138.99