Finding the Fourth Proportional to 2,090.88, 3,139.48 and 1,661.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.88 : 3,139.48 = 1,661.52 : x
2. Step 2: Convert to fraction form
   2,090.88/3,139.48 = 1,661.52/x
3. Step 3: Cross multiply
   2,090.88x = 3,139.48 × 1,661.52
4. Step 4: Simplify right side
   2,090.88x = 5,216,308.81
5. Step 5: Solve for x
   x = 5,216,308.81/2,090.88
6. Step 6: Final answer
   x = 2,494.79