Finding the Fourth Proportional to 2,520.89, 3,782.70 and 1,222.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.89 : 3,782.70 = 1,222.36 : x
2. Step 2: Convert to fraction form
   2,520.89/3,782.70 = 1,222.36/x
3. Step 3: Cross multiply
   2,520.89x = 3,782.70 × 1,222.36
4. Step 4: Simplify right side
   2,520.89x = 4,623,811.72
5. Step 5: Solve for x
   x = 4,623,811.72/2,520.89
6. Step 6: Final answer
   x = 1,834.20