Finding the Fourth Proportional to 2,177.34, 3,261.69 and 1,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,177.34 : 3,261.69 = 1,405.50 : x
2. Step 2: Convert to fraction form
   2,177.34/3,261.69 = 1,405.50/x
3. Step 3: Cross multiply
   2,177.34x = 3,261.69 × 1,405.50
4. Step 4: Simplify right side
   2,177.34x = 4,584,305.30
5. Step 5: Solve for x
   x = 4,584,305.30/2,177.34
6. Step 6: Final answer
   x = 2,105.46