Finding the Fourth Proportional to 2,946.72, 4,066.50 and 1,620.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,946.72 : 4,066.50 = 1,620.42 : x
2. Step 2: Convert to fraction form
   2,946.72/4,066.50 = 1,620.42/x
3. Step 3: Cross multiply
   2,946.72x = 4,066.50 × 1,620.42
4. Step 4: Simplify right side
   2,946.72x = 6,589,437.93
5. Step 5: Solve for x
   x = 6,589,437.93/2,946.72
6. Step 6: Final answer
   x = 2,236.19