Finding the Fourth Proportional to 2,942.78, 4,061.48 and 1,764.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,942.78 : 4,061.48 = 1,764.05 : x
2. Step 2: Convert to fraction form
   2,942.78/4,061.48 = 1,764.05/x
3. Step 3: Cross multiply
   2,942.78x = 4,061.48 × 1,764.05
4. Step 4: Simplify right side
   2,942.78x = 7,164,624.67
5. Step 5: Solve for x
   x = 7,164,624.67/2,942.78
6. Step 6: Final answer
   x = 2,434.65