Finding the Fourth Proportional to 2,945.17, 4,064.31 and 1,766.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.17 : 4,064.31 = 1,766.91 : x
2. Step 2: Convert to fraction form
   2,945.17/4,064.31 = 1,766.91/x
3. Step 3: Cross multiply
   2,945.17x = 4,064.31 × 1,766.91
4. Step 4: Simplify right side
   2,945.17x = 7,181,269.98
5. Step 5: Solve for x
   x = 7,181,269.98/2,945.17
6. Step 6: Final answer
   x = 2,438.32