Finding the Fourth Proportional to 3,494.57, 5,248.80 and 2,091.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,494.57 : 5,248.80 = 2,091.69 : x
2. Step 2: Convert to fraction form
   3,494.57/5,248.80 = 2,091.69/x
3. Step 3: Cross multiply
   3,494.57x = 5,248.80 × 2,091.69
4. Step 4: Simplify right side
   3,494.57x = 10,978,862.47
5. Step 5: Solve for x
   x = 10,978,862.47/3,494.57
6. Step 6: Final answer
   x = 3,141.70