Finding the Fourth Proportional to 2,242.89, 3,363.12 and 761.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,242.89 : 3,363.12 = 761.67 : x
2. Step 2: Convert to fraction form
   2,242.89/3,363.12 = 761.67/x
3. Step 3: Cross multiply
   2,242.89x = 3,363.12 × 761.67
4. Step 4: Simplify right side
   2,242.89x = 2,561,587.61
5. Step 5: Solve for x
   x = 2,561,587.61/2,242.89
6. Step 6: Final answer
   x = 1,142.09