Finding the Fourth Proportional to 1,091.68, 1,635.68 and 700.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.68 : 1,635.68 = 700.72 : x
2. Step 2: Convert to fraction form
   1,091.68/1,635.68 = 700.72/x
3. Step 3: Cross multiply
   1,091.68x = 1,635.68 × 700.72
4. Step 4: Simplify right side
   1,091.68x = 1,146,153.69
5. Step 5: Solve for x
   x = 1,146,153.69/1,091.68
6. Step 6: Final answer
   x = 1,049.90