Finding the Fourth Proportional to 2,429.65, 3,641.46 and 1,390.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.65 : 3,641.46 = 1,390.51 : x
2. Step 2: Convert to fraction form
   2,429.65/3,641.46 = 1,390.51/x
3. Step 3: Cross multiply
   2,429.65x = 3,641.46 × 1,390.51
4. Step 4: Simplify right side
   2,429.65x = 5,063,486.54
5. Step 5: Solve for x
   x = 5,063,486.54/2,429.65
6. Step 6: Final answer
   x = 2,084.04