Finding the Fourth Proportional to 2,305.50, 3,181.83 and 1,421.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,305.50 : 3,181.83 = 1,421.28 : x
2. Step 2: Convert to fraction form
   2,305.50/3,181.83 = 1,421.28/x
3. Step 3: Cross multiply
   2,305.50x = 3,181.83 × 1,421.28
4. Step 4: Simplify right side
   2,305.50x = 4,522,271.34
5. Step 5: Solve for x
   x = 4,522,271.34/2,305.50
6. Step 6: Final answer
   x = 1,961.51