Finding the Fourth Proportional to 2,051.92, 3,077.20 and 1,128.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,051.92 : 3,077.20 = 1,128.52 : x
2. Step 2: Convert to fraction form
   2,051.92/3,077.20 = 1,128.52/x
3. Step 3: Cross multiply
   2,051.92x = 3,077.20 × 1,128.52
4. Step 4: Simplify right side
   2,051.92x = 3,472,681.74
5. Step 5: Solve for x
   x = 3,472,681.74/2,051.92
6. Step 6: Final answer
   x = 1,692.41