Finding the Fourth Proportional to 1,133.02, 1,697.69 and 645.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,133.02 : 1,697.69 = 645.50 : x
2. Step 2: Convert to fraction form
   1,133.02/1,697.69 = 645.50/x
3. Step 3: Cross multiply
   1,133.02x = 1,697.69 × 645.50
4. Step 4: Simplify right side
   1,133.02x = 1,095,864.75
5. Step 5: Solve for x
   x = 1,095,864.75/1,133.02
6. Step 6: Final answer
   x = 967.21