Finding the Fourth Proportional to 1,141.56, 1,574.76 and 699.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.56 : 1,574.76 = 699.36 : x
2. Step 2: Convert to fraction form
   1,141.56/1,574.76 = 699.36/x
3. Step 3: Cross multiply
   1,141.56x = 1,574.76 × 699.36
4. Step 4: Simplify right side
   1,141.56x = 1,101,324.15
5. Step 5: Solve for x
   x = 1,101,324.15/1,141.56
6. Step 6: Final answer
   x = 964.75