Finding the Fourth Proportional to 1,447.69, 2,172.35 and 1,435.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.69 : 2,172.35 = 1,435.94 : x
2. Step 2: Convert to fraction form
   1,447.69/2,172.35 = 1,435.94/x
3. Step 3: Cross multiply
   1,447.69x = 2,172.35 × 1,435.94
4. Step 4: Simplify right side
   1,447.69x = 3,119,364.26
5. Step 5: Solve for x
   x = 3,119,364.26/1,447.69
6. Step 6: Final answer
   x = 2,154.72