Finding the Fourth Proportional to 2,321.06, 3,200.92 and 2,153.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.06 : 3,200.92 = 2,153.39 : x
2. Step 2: Convert to fraction form
   2,321.06/3,200.92 = 2,153.39/x
3. Step 3: Cross multiply
   2,321.06x = 3,200.92 × 2,153.39
4. Step 4: Simplify right side
   2,321.06x = 6,892,807.73
5. Step 5: Solve for x
   x = 6,892,807.73/2,321.06
6. Step 6: Final answer
   x = 2,969.69