Finding the Fourth Proportional to 2,155.55, 3,232.10 and 838.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.55 : 3,232.10 = 838.22 : x
2. Step 2: Convert to fraction form
   2,155.55/3,232.10 = 838.22/x
3. Step 3: Cross multiply
   2,155.55x = 3,232.10 × 838.22
4. Step 4: Simplify right side
   2,155.55x = 2,709,196.80
5. Step 5: Solve for x
   x = 2,709,196.80/2,155.55
6. Step 6: Final answer
   x = 1,256.85