Finding the Fourth Proportional to 2,470.59, 3,409.55 and 1,422.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,470.59 : 3,409.55 = 1,422.65 : x
2. Step 2: Convert to fraction form
   2,470.59/3,409.55 = 1,422.65/x
3. Step 3: Cross multiply
   2,470.59x = 3,409.55 × 1,422.65
4. Step 4: Simplify right side
   2,470.59x = 4,850,572.15
5. Step 5: Solve for x
   x = 4,850,572.15/2,470.59
6. Step 6: Final answer
   x = 1,963.33