Finding the Fourth Proportional to 3,425.71, 5,139.33 and 1,085.84

Step by Step Solution

1. Step 1: Write the proportion equation
   3,425.71 : 5,139.33 = 1,085.84 : x
2. Step 2: Convert to fraction form
   3,425.71/5,139.33 = 1,085.84/x
3. Step 3: Cross multiply
   3,425.71x = 5,139.33 × 1,085.84
4. Step 4: Simplify right side
   3,425.71x = 5,580,498.86
5. Step 5: Solve for x
   x = 5,580,498.86/3,425.71
6. Step 6: Final answer
   x = 1,629.01