Finding the Fourth Proportional to 2,376.51, 3,564.50 and 645.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,376.51 : 3,564.50 = 645.27 : x
2. Step 2: Convert to fraction form
   2,376.51/3,564.50 = 645.27/x
3. Step 3: Cross multiply
   2,376.51x = 3,564.50 × 645.27
4. Step 4: Simplify right side
   2,376.51x = 2,300,061.69
5. Step 5: Solve for x
   x = 2,300,061.69/2,376.51
6. Step 6: Final answer
   x = 967.83