Finding the Fourth Proportional to 1,133.33, 1,564.43 and 691.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,133.33 : 1,564.43 = 691.25 : x
2. Step 2: Convert to fraction form
   1,133.33/1,564.43 = 691.25/x
3. Step 3: Cross multiply
   1,133.33x = 1,564.43 × 691.25
4. Step 4: Simplify right side
   1,133.33x = 1,081,400.96
5. Step 5: Solve for x
   x = 1,081,400.96/1,133.33
6. Step 6: Final answer
   x = 954.18