Finding the Fourth Proportional to 2,387.50, 3,292.76 and 1,640.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,387.50 : 3,292.76 = 1,640.26 : x
2. Step 2: Convert to fraction form
   2,387.50/3,292.76 = 1,640.26/x
3. Step 3: Cross multiply
   2,387.50x = 3,292.76 × 1,640.26
4. Step 4: Simplify right side
   2,387.50x = 5,400,982.52
5. Step 5: Solve for x
   x = 5,400,982.52/2,387.50
6. Step 6: Final answer
   x = 2,262.19