Finding the Fourth Proportional to 2,945.88, 4,064.76 and 1,686.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.88 : 4,064.76 = 1,686.72 : x
2. Step 2: Convert to fraction form
   2,945.88/4,064.76 = 1,686.72/x
3. Step 3: Cross multiply
   2,945.88x = 4,064.76 × 1,686.72
4. Step 4: Simplify right side
   2,945.88x = 6,856,111.99
5. Step 5: Solve for x
   x = 6,856,111.99/2,945.88
6. Step 6: Final answer
   x = 2,327.36