Finding the Fourth Proportional to 2,128.79, 3,192.56 and 741.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.79 : 3,192.56 = 741.87 : x
2. Step 2: Convert to fraction form
   2,128.79/3,192.56 = 741.87/x
3. Step 3: Cross multiply
   2,128.79x = 3,192.56 × 741.87
4. Step 4: Simplify right side
   2,128.79x = 2,368,472.22
5. Step 5: Solve for x
   x = 2,368,472.22/2,128.79
6. Step 6: Final answer
   x = 1,112.59