Finding the Fourth Proportional to 3,085.34, 4,256.18 and 2,090.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,085.34 : 4,256.18 = 2,090.28 : x
2. Step 2: Convert to fraction form
   3,085.34/4,256.18 = 2,090.28/x
3. Step 3: Cross multiply
   3,085.34x = 4,256.18 × 2,090.28
4. Step 4: Simplify right side
   3,085.34x = 8,896,607.93
5. Step 5: Solve for x
   x = 8,896,607.93/3,085.34
6. Step 6: Final answer
   x = 2,883.51