Finding the Fourth Proportional to 1,776.28, 2,450.46 and 1,543

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.28 : 2,450.46 = 1,543 : x
2. Step 2: Convert to fraction form
   1,776.28/2,450.46 = 1,543/x
3. Step 3: Cross multiply
   1,776.28x = 2,450.46 × 1,543
4. Step 4: Simplify right side
   1,776.28x = 3,781,059.78
5. Step 5: Solve for x
   x = 3,781,059.78/1,776.28
6. Step 6: Final answer
   x = 2,128.64