Finding the Fourth Proportional to 2,782.50, 4,164.30 and 2,321.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,782.50 : 4,164.30 = 2,321.10 : x
2. Step 2: Convert to fraction form
   2,782.50/4,164.30 = 2,321.10/x
3. Step 3: Cross multiply
   2,782.50x = 4,164.30 × 2,321.10
4. Step 4: Simplify right side
   2,782.50x = 9,665,756.73
5. Step 5: Solve for x
   x = 9,665,756.73/2,782.50
6. Step 6: Final answer
   x = 3,473.77