Finding the Fourth Proportional to 2,822.49, 4,233.89 and 742.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,822.49 : 4,233.89 = 742.50 : x
2. Step 2: Convert to fraction form
   2,822.49/4,233.89 = 742.50/x
3. Step 3: Cross multiply
   2,822.49x = 4,233.89 × 742.50
4. Step 4: Simplify right side
   2,822.49x = 3,143,659.61
5. Step 5: Solve for x
   x = 3,143,659.61/2,822.49
6. Step 6: Final answer
   x = 1,113.79