Finding the Fourth Proportional to 3,945.31, 5,918.60 and 1,753.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.31 : 5,918.60 = 1,753.92 : x
2. Step 2: Convert to fraction form
   3,945.31/5,918.60 = 1,753.92/x
3. Step 3: Cross multiply
   3,945.31x = 5,918.60 × 1,753.92
4. Step 4: Simplify right side
   3,945.31x = 10,380,755.30
5. Step 5: Solve for x
   x = 10,380,755.30/3,945.31
6. Step 6: Final answer
   x = 2,631.17