Finding the Fourth Proportional to 2,762.58, 4,142.79 and 1,222.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,762.58 : 4,142.79 = 1,222.50 : x
2. Step 2: Convert to fraction form
   2,762.58/4,142.79 = 1,222.50/x
3. Step 3: Cross multiply
   2,762.58x = 4,142.79 × 1,222.50
4. Step 4: Simplify right side
   2,762.58x = 5,064,560.78
5. Step 5: Solve for x
   x = 5,064,560.78/2,762.58
6. Step 6: Final answer
   x = 1,833.27