Finding the Fourth Proportional to 2,549.34, 3,820.91 and 1,085.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,549.34 : 3,820.91 = 1,085.40 : x
2. Step 2: Convert to fraction form
   2,549.34/3,820.91 = 1,085.40/x
3. Step 3: Cross multiply
   2,549.34x = 3,820.91 × 1,085.40
4. Step 4: Simplify right side
   2,549.34x = 4,147,210.29
5. Step 5: Solve for x
   x = 4,147,210.29/2,549.34
6. Step 6: Final answer
   x = 1,626.78