Finding the Fourth Proportional to 1,776.74, 2,664.50 and 1,126.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.74 : 2,664.50 = 1,126.71 : x
2. Step 2: Convert to fraction form
   1,776.74/2,664.50 = 1,126.71/x
3. Step 3: Cross multiply
   1,776.74x = 2,664.50 × 1,126.71
4. Step 4: Simplify right side
   1,776.74x = 3,002,113.16
5. Step 5: Solve for x
   x = 3,002,113.16/1,776.74
6. Step 6: Final answer
   x = 1,689.68