Finding the Fourth Proportional to 2,773.34, 4,158.86 and 1,128.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,773.34 : 4,158.86 = 1,128.77 : x
2. Step 2: Convert to fraction form
   2,773.34/4,158.86 = 1,128.77/x
3. Step 3: Cross multiply
   2,773.34x = 4,158.86 × 1,128.77
4. Step 4: Simplify right side
   2,773.34x = 4,694,403.98
5. Step 5: Solve for x
   x = 4,694,403.98/2,773.34
6. Step 6: Final answer
   x = 1,692.69