Finding the Fourth Proportional to 2,640.65, 3,957.78 and 1,470.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.65 : 3,957.78 = 1,470.59 : x
2. Step 2: Convert to fraction form
   2,640.65/3,957.78 = 1,470.59/x
3. Step 3: Cross multiply
   2,640.65x = 3,957.78 × 1,470.59
4. Step 4: Simplify right side
   2,640.65x = 5,820,271.69
5. Step 5: Solve for x
   x = 5,820,271.69/2,640.65
6. Step 6: Final answer
   x = 2,204.11