Finding the Fourth Proportional to 2,811.56, 3,880.72 and 1,633

Step by Step Solution

1. Step 1: Write the proportion equation
   2,811.56 : 3,880.72 = 1,633 : x
2. Step 2: Convert to fraction form
   2,811.56/3,880.72 = 1,633/x
3. Step 3: Cross multiply
   2,811.56x = 3,880.72 × 1,633
4. Step 4: Simplify right side
   2,811.56x = 6,337,215.76
5. Step 5: Solve for x
   x = 6,337,215.76/2,811.56
6. Step 6: Final answer
   x = 2,253.99