Finding the Fourth Proportional to 2,376.57, 3,564.52 and 816.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,376.57 : 3,564.52 = 816.55 : x
2. Step 2: Convert to fraction form
   2,376.57/3,564.52 = 816.55/x
3. Step 3: Cross multiply
   2,376.57x = 3,564.52 × 816.55
4. Step 4: Simplify right side
   2,376.57x = 2,910,608.81
5. Step 5: Solve for x
   x = 2,910,608.81/2,376.57
6. Step 6: Final answer
   x = 1,224.71