Finding the Fourth Proportional to 3,393.98, 5,091.76 and 1,053.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,393.98 : 5,091.76 = 1,053.86 : x
2. Step 2: Convert to fraction form
   3,393.98/5,091.76 = 1,053.86/x
3. Step 3: Cross multiply
   3,393.98x = 5,091.76 × 1,053.86
4. Step 4: Simplify right side
   3,393.98x = 5,366,007.68
5. Step 5: Solve for x
   x = 5,366,007.68/3,393.98
6. Step 6: Final answer
   x = 1,581.04