Finding the Fourth Proportional to 2,777.50, 4,162.76 and 1,216.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,777.50 : 4,162.76 = 1,216.53 : x
2. Step 2: Convert to fraction form
   2,777.50/4,162.76 = 1,216.53/x
3. Step 3: Cross multiply
   2,777.50x = 4,162.76 × 1,216.53
4. Step 4: Simplify right side
   2,777.50x = 5,064,120.90
5. Step 5: Solve for x
   x = 5,064,120.90/2,777.50
6. Step 6: Final answer
   x = 1,823.27