Finding the Fourth Proportional to 1,441.63, 2,164.59 and 1,178.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.63 : 2,164.59 = 1,178.89 : x
2. Step 2: Convert to fraction form
   1,441.63/2,164.59 = 1,178.89/x
3. Step 3: Cross multiply
   1,441.63x = 2,164.59 × 1,178.89
4. Step 4: Simplify right side
   1,441.63x = 2,551,808.09
5. Step 5: Solve for x
   x = 2,551,808.09/1,441.63
6. Step 6: Final answer
   x = 1,770.08