Finding the Fourth Proportional to 2,146.82, 3,221.67 and 760.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.82 : 3,221.67 = 760.15 : x
2. Step 2: Convert to fraction form
   2,146.82/3,221.67 = 760.15/x
3. Step 3: Cross multiply
   2,146.82x = 3,221.67 × 760.15
4. Step 4: Simplify right side
   2,146.82x = 2,448,952.45
5. Step 5: Solve for x
   x = 2,448,952.45/2,146.82
6. Step 6: Final answer
   x = 1,140.73