Finding the Fourth Proportional to 2,120.76, 2,924.63 and 1,623.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120.76 : 2,924.63 = 1,623.42 : x
2. Step 2: Convert to fraction form
   2,120.76/2,924.63 = 1,623.42/x
3. Step 3: Cross multiply
   2,120.76x = 2,924.63 × 1,623.42
4. Step 4: Simplify right side
   2,120.76x = 4,747,902.83
5. Step 5: Solve for x
   x = 4,747,902.83/2,120.76
6. Step 6: Final answer
   x = 2,238.77