Finding the Fourth Proportional to 2,062.10, 3,090.57 and 890.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,062.10 : 3,090.57 = 890.72 : x
2. Step 2: Convert to fraction form
   2,062.10/3,090.57 = 890.72/x
3. Step 3: Cross multiply
   2,062.10x = 3,090.57 × 890.72
4. Step 4: Simplify right side
   2,062.10x = 2,752,832.51
5. Step 5: Solve for x
   x = 2,752,832.51/2,062.10
6. Step 6: Final answer
   x = 1,334.97