Finding the Fourth Proportional to 1,089.82, 1,505.02 and 692.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089.82 : 1,505.02 = 692.23 : x
2. Step 2: Convert to fraction form
   1,089.82/1,505.02 = 692.23/x
3. Step 3: Cross multiply
   1,089.82x = 1,505.02 × 692.23
4. Step 4: Simplify right side
   1,089.82x = 1,041,814.20
5. Step 5: Solve for x
   x = 1,041,814.20/1,089.82
6. Step 6: Final answer
   x = 955.96