Finding the Fourth Proportional to 2,219.27, 3,061.31 and 1,620.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.27 : 3,061.31 = 1,620.99 : x
2. Step 2: Convert to fraction form
   2,219.27/3,061.31 = 1,620.99/x
3. Step 3: Cross multiply
   2,219.27x = 3,061.31 × 1,620.99
4. Step 4: Simplify right side
   2,219.27x = 4,962,344.79
5. Step 5: Solve for x
   x = 4,962,344.79/2,219.27
6. Step 6: Final answer
   x = 2,236.03