Finding the Fourth Proportional to 3,393.88, 5,090.88 and 1,085.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,393.88 : 5,090.88 = 1,085.38 : x
2. Step 2: Convert to fraction form
   3,393.88/5,090.88 = 1,085.38/x
3. Step 3: Cross multiply
   3,393.88x = 5,090.88 × 1,085.38
4. Step 4: Simplify right side
   3,393.88x = 5,525,513.88
5. Step 5: Solve for x
   x = 5,525,513.88/3,393.88
6. Step 6: Final answer
   x = 1,628.08