Finding the Fourth Proportional to 2,783.15, 4,191.24 and 2,422.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,783.15 : 4,191.24 = 2,422.30 : x
2. Step 2: Convert to fraction form
   2,783.15/4,191.24 = 2,422.30/x
3. Step 3: Cross multiply
   2,783.15x = 4,191.24 × 2,422.30
4. Step 4: Simplify right side
   2,783.15x = 10,152,407.58
5. Step 5: Solve for x
   x = 10,152,407.58/2,783.15
6. Step 6: Final answer
   x = 3,647.81