Finding the Fourth Proportional to 2,653.48, 3,976.75 and 1,091.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.48 : 3,976.75 = 1,091.69 : x
2. Step 2: Convert to fraction form
   2,653.48/3,976.75 = 1,091.69/x
3. Step 3: Cross multiply
   2,653.48x = 3,976.75 × 1,091.69
4. Step 4: Simplify right side
   2,653.48x = 4,341,385.42
5. Step 5: Solve for x
   x = 4,341,385.42/2,653.48
6. Step 6: Final answer
   x = 1,636.11