Finding the Fourth Proportional to 1,646.42, 2,470.23 and 1,339.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.42 : 2,470.23 = 1,339.02 : x
2. Step 2: Convert to fraction form
   1,646.42/2,470.23 = 1,339.02/x
3. Step 3: Cross multiply
   1,646.42x = 2,470.23 × 1,339.02
4. Step 4: Simplify right side
   1,646.42x = 3,307,687.37
5. Step 5: Solve for x
   x = 3,307,687.37/1,646.42
6. Step 6: Final answer
   x = 2,009.02