Finding the Fourth Proportional to 1,458.81, 2,172.52 and 1,395.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,458.81 : 2,172.52 = 1,395.63 : x
2. Step 2: Convert to fraction form
   1,458.81/2,172.52 = 1,395.63/x
3. Step 3: Cross multiply
   1,458.81x = 2,172.52 × 1,395.63
4. Step 4: Simplify right side
   1,458.81x = 3,032,035.83
5. Step 5: Solve for x
   x = 3,032,035.83/1,458.81
6. Step 6: Final answer
   x = 2,078.43