Finding the Fourth Proportional to 1,461.05, 2,178.71 and 1,447.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,461.05 : 2,178.71 = 1,447.89 : x
2. Step 2: Convert to fraction form
   1,461.05/2,178.71 = 1,447.89/x
3. Step 3: Cross multiply
   1,461.05x = 2,178.71 × 1,447.89
4. Step 4: Simplify right side
   1,461.05x = 3,154,525.18
5. Step 5: Solve for x
   x = 3,154,525.18/1,461.05
6. Step 6: Final answer
   x = 2,159.08