Finding the Fourth Proportional to 2,218.61, 3,329.58 and 833.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.61 : 3,329.58 = 833.31 : x
2. Step 2: Convert to fraction form
   2,218.61/3,329.58 = 833.31/x
3. Step 3: Cross multiply
   2,218.61x = 3,329.58 × 833.31
4. Step 4: Simplify right side
   2,218.61x = 2,774,572.31
5. Step 5: Solve for x
   x = 2,774,572.31/2,218.61
6. Step 6: Final answer
   x = 1,250.59