Finding the Fourth Proportional to 1,410.72, 1,942.56 and 1,177.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.72 : 1,942.56 = 1,177.44 : x
2. Step 2: Convert to fraction form
   1,410.72/1,942.56 = 1,177.44/x
3. Step 3: Cross multiply
   1,410.72x = 1,942.56 × 1,177.44
4. Step 4: Simplify right side
   1,410.72x = 2,287,247.85
5. Step 5: Solve for x
   x = 2,287,247.85/1,410.72
6. Step 6: Final answer
   x = 1,621.33