Finding the Fourth Proportional to 1,092.18, 1,507.73 and 699.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.18 : 1,507.73 = 699.43 : x
2. Step 2: Convert to fraction form
   1,092.18/1,507.73 = 699.43/x
3. Step 3: Cross multiply
   1,092.18x = 1,507.73 × 699.43
4. Step 4: Simplify right side
   1,092.18x = 1,054,551.59
5. Step 5: Solve for x
   x = 1,054,551.59/1,092.18
6. Step 6: Final answer
   x = 965.55