Finding the Fourth Proportional to 1,137.27, 1,569.83 and 718.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.27 : 1,569.83 = 718.32 : x
2. Step 2: Convert to fraction form
   1,137.27/1,569.83 = 718.32/x
3. Step 3: Cross multiply
   1,137.27x = 1,569.83 × 718.32
4. Step 4: Simplify right side
   1,137.27x = 1,127,640.29
5. Step 5: Solve for x
   x = 1,127,640.29/1,137.27
6. Step 6: Final answer
   x = 991.53