Finding the Fourth Proportional to 2,638.31, 3,945.65 and 2,347.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.31 : 3,945.65 = 2,347.52 : x
2. Step 2: Convert to fraction form
   2,638.31/3,945.65 = 2,347.52/x
3. Step 3: Cross multiply
   2,638.31x = 3,945.65 × 2,347.52
4. Step 4: Simplify right side
   2,638.31x = 9,262,460.82
5. Step 5: Solve for x
   x = 9,262,460.82/2,638.31
6. Step 6: Final answer
   x = 3,510.76