Finding the Fourth Proportional to 2,090.41, 3,132.88 and 1,308.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.41 : 3,132.88 = 1,308.56 : x
2. Step 2: Convert to fraction form
   2,090.41/3,132.88 = 1,308.56/x
3. Step 3: Cross multiply
   2,090.41x = 3,132.88 × 1,308.56
4. Step 4: Simplify right side
   2,090.41x = 4,099,542.52
5. Step 5: Solve for x
   x = 4,099,542.52/2,090.41
6. Step 6: Final answer
   x = 1,961.12