Finding the Fourth Proportional to 1,923.72, 2,654.04 and 1,177.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,923.72 : 2,654.04 = 1,177.20 : x
2. Step 2: Convert to fraction form
   1,923.72/2,654.04 = 1,177.20/x
3. Step 3: Cross multiply
   1,923.72x = 2,654.04 × 1,177.20
4. Step 4: Simplify right side
   1,923.72x = 3,124,335.89
5. Step 5: Solve for x
   x = 3,124,335.89/1,923.72
6. Step 6: Final answer
   x = 1,624.11