Finding the Fourth Proportional to 2,333.76, 3,220.59 and 1,285.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,333.76 : 3,220.59 = 1,285.83 : x
2. Step 2: Convert to fraction form
   2,333.76/3,220.59 = 1,285.83/x
3. Step 3: Cross multiply
   2,333.76x = 3,220.59 × 1,285.83
4. Step 4: Simplify right side
   2,333.76x = 4,141,131.24
5. Step 5: Solve for x
   x = 4,141,131.24/2,333.76
6. Step 6: Final answer
   x = 1,774.45