Finding the Fourth Proportional to 3,421.59, 5,131.94 and 1,081.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,421.59 : 5,131.94 = 1,081.83 : x
2. Step 2: Convert to fraction form
   3,421.59/5,131.94 = 1,081.83/x
3. Step 3: Cross multiply
   3,421.59x = 5,131.94 × 1,081.83
4. Step 4: Simplify right side
   3,421.59x = 5,551,862.00
5. Step 5: Solve for x
   x = 5,551,862.00/3,421.59
6. Step 6: Final answer
   x = 1,622.60