Finding the Fourth Proportional to 1,176.72, 1,756.48 and 1,091.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,176.72 : 1,756.48 = 1,091.06 : x
2. Step 2: Convert to fraction form
   1,176.72/1,756.48 = 1,091.06/x
3. Step 3: Cross multiply
   1,176.72x = 1,756.48 × 1,091.06
4. Step 4: Simplify right side
   1,176.72x = 1,916,425.07
5. Step 5: Solve for x
   x = 1,916,425.07/1,176.72
6. Step 6: Final answer
   x = 1,628.62