Finding the Fourth Proportional to 2,128.77, 3,192.51 and 741.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.77 : 3,192.51 = 741.72 : x
2. Step 2: Convert to fraction form
   2,128.77/3,192.51 = 741.72/x
3. Step 3: Cross multiply
   2,128.77x = 3,192.51 × 741.72
4. Step 4: Simplify right side
   2,128.77x = 2,367,948.52
5. Step 5: Solve for x
   x = 2,367,948.52/2,128.77
6. Step 6: Final answer
   x = 1,112.36