Finding the Fourth Proportional to 2,945.97, 4,417.17 and 1,386.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.97 : 4,417.17 = 1,386.30 : x
2. Step 2: Convert to fraction form
   2,945.97/4,417.17 = 1,386.30/x
3. Step 3: Cross multiply
   2,945.97x = 4,417.17 × 1,386.30
4. Step 4: Simplify right side
   2,945.97x = 6,123,522.77
5. Step 5: Solve for x
   x = 6,123,522.77/2,945.97
6. Step 6: Final answer
   x = 2,078.61