Finding the Fourth Proportional to 2,116.83, 3,177.30 and 1,021.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.83 : 3,177.30 = 1,021.96 : x
2. Step 2: Convert to fraction form
   2,116.83/3,177.30 = 1,021.96/x
3. Step 3: Cross multiply
   2,116.83x = 3,177.30 × 1,021.96
4. Step 4: Simplify right side
   2,116.83x = 3,247,081.59
5. Step 5: Solve for x
   x = 3,247,081.59/2,116.83
6. Step 6: Final answer
   x = 1,533.94