Finding the Fourth Proportional to 1,091.52, 1,506.06 and 699.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.52 : 1,506.06 = 699.12 : x
2. Step 2: Convert to fraction form
   1,091.52/1,506.06 = 699.12/x
3. Step 3: Cross multiply
   1,091.52x = 1,506.06 × 699.12
4. Step 4: Simplify right side
   1,091.52x = 1,052,916.67
5. Step 5: Solve for x
   x = 1,052,916.67/1,091.52
6. Step 6: Final answer
   x = 964.63