Finding the Fourth Proportional to 2,128.92, 3,191.76 and 741.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.92 : 3,191.76 = 741.66 : x
2. Step 2: Convert to fraction form
   2,128.92/3,191.76 = 741.66/x
3. Step 3: Cross multiply
   2,128.92x = 3,191.76 × 741.66
4. Step 4: Simplify right side
   2,128.92x = 2,367,200.72
5. Step 5: Solve for x
   x = 2,367,200.72/2,128.92
6. Step 6: Final answer
   x = 1,111.93