Finding the Fourth Proportional to 2,771.96, 4,159.38 and 1,129.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,771.96 : 4,159.38 = 1,129.72 : x
2. Step 2: Convert to fraction form
   2,771.96/4,159.38 = 1,129.72/x
3. Step 3: Cross multiply
   2,771.96x = 4,159.38 × 1,129.72
4. Step 4: Simplify right side
   2,771.96x = 4,698,934.77
5. Step 5: Solve for x
   x = 4,698,934.77/2,771.96
6. Step 6: Final answer
   x = 1,695.17