Finding the Fourth Proportional to 2,048.13, 3,086.01 and 1,690.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.13 : 3,086.01 = 1,690.92 : x
2. Step 2: Convert to fraction form
   2,048.13/3,086.01 = 1,690.92/x
3. Step 3: Cross multiply
   2,048.13x = 3,086.01 × 1,690.92
4. Step 4: Simplify right side
   2,048.13x = 5,218,196.03
5. Step 5: Solve for x
   x = 5,218,196.03/2,048.13
6. Step 6: Final answer
   x = 2,547.79