Finding the Fourth Proportional to 2,059.83, 2,842.16 and 1,221.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.83 : 2,842.16 = 1,221.17 : x
2. Step 2: Convert to fraction form
   2,059.83/2,842.16 = 1,221.17/x
3. Step 3: Cross multiply
   2,059.83x = 2,842.16 × 1,221.17
4. Step 4: Simplify right side
   2,059.83x = 3,470,740.21
5. Step 5: Solve for x
   x = 3,470,740.21/2,059.83
6. Step 6: Final answer
   x = 1,684.96