Finding the Fourth Proportional to 2,077.10, 2,865.68 and 1,321.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.10 : 2,865.68 = 1,321.22 : x
2. Step 2: Convert to fraction form
   2,077.10/2,865.68 = 1,321.22/x
3. Step 3: Cross multiply
   2,077.10x = 2,865.68 × 1,321.22
4. Step 4: Simplify right side
   2,077.10x = 3,786,172.80
5. Step 5: Solve for x
   x = 3,786,172.80/2,077.10
6. Step 6: Final answer
   x = 1,822.82