Finding the Fourth Proportional to 1,091.98, 1,506.90 and 650.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.98 : 1,506.90 = 650.08 : x
2. Step 2: Convert to fraction form
   1,091.98/1,506.90 = 650.08/x
3. Step 3: Cross multiply
   1,091.98x = 1,506.90 × 650.08
4. Step 4: Simplify right side
   1,091.98x = 979,605.55
5. Step 5: Solve for x
   x = 979,605.55/1,091.98
6. Step 6: Final answer
   x = 897.09