Finding the Fourth Proportional to 1,641.72, 2,448.71 and 1,395.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.72 : 2,448.71 = 1,395.48 : x
2. Step 2: Convert to fraction form
   1,641.72/2,448.71 = 1,395.48/x
3. Step 3: Cross multiply
   1,641.72x = 2,448.71 × 1,395.48
4. Step 4: Simplify right side
   1,641.72x = 3,417,125.83
5. Step 5: Solve for x
   x = 3,417,125.83/1,641.72
6. Step 6: Final answer
   x = 2,081.43