Finding the Fourth Proportional to 1,411.72, 1,943.94 and 1,178.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.72 : 1,943.94 = 1,178.44 : x
2. Step 2: Convert to fraction form
   1,411.72/1,943.94 = 1,178.44/x
3. Step 3: Cross multiply
   1,411.72x = 1,943.94 × 1,178.44
4. Step 4: Simplify right side
   1,411.72x = 2,290,816.65
5. Step 5: Solve for x
   x = 2,290,816.65/1,411.72
6. Step 6: Final answer
   x = 1,622.71