Finding the Fourth Proportional to 1,447.74, 2,160.89 and 1,412.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.74 : 2,160.89 = 1,412.78 : x
2. Step 2: Convert to fraction form
   1,447.74/2,160.89 = 1,412.78/x
3. Step 3: Cross multiply
   1,447.74x = 2,160.89 × 1,412.78
4. Step 4: Simplify right side
   1,447.74x = 3,052,849.60
5. Step 5: Solve for x
   x = 3,052,849.60/1,447.74
6. Step 6: Final answer
   x = 2,108.70