Finding the Fourth Proportional to 2,788.96, 4,184.72 and 1,421.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.96 : 4,184.72 = 1,421.92 : x
2. Step 2: Convert to fraction form
   2,788.96/4,184.72 = 1,421.92/x
3. Step 3: Cross multiply
   2,788.96x = 4,184.72 × 1,421.92
4. Step 4: Simplify right side
   2,788.96x = 5,950,337.06
5. Step 5: Solve for x
   x = 5,950,337.06/2,788.96
6. Step 6: Final answer
   x = 2,133.53