Finding the Fourth Proportional to 3,643.34, 5,470.46 and 2,085.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,643.34 : 5,470.46 = 2,085.10 : x
2. Step 2: Convert to fraction form
   3,643.34/5,470.46 = 2,085.10/x
3. Step 3: Cross multiply
   3,643.34x = 5,470.46 × 2,085.10
4. Step 4: Simplify right side
   3,643.34x = 11,406,456.15
5. Step 5: Solve for x
   x = 11,406,456.15/3,643.34
6. Step 6: Final answer
   x = 3,130.77