Finding the Fourth Proportional to 1,550.40, 2,141.02 and 1,404.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.40 : 2,141.02 = 1,404.60 : x
2. Step 2: Convert to fraction form
   1,550.40/2,141.02 = 1,404.60/x
3. Step 3: Cross multiply
   1,550.40x = 2,141.02 × 1,404.60
4. Step 4: Simplify right side
   1,550.40x = 3,007,276.69
5. Step 5: Solve for x
   x = 3,007,276.69/1,550.40
6. Step 6: Final answer
   x = 1,939.68