Finding the Fourth Proportional to 1,808.21, 2,493.81 and 1,434.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,808.21 : 2,493.81 = 1,434.60 : x
2. Step 2: Convert to fraction form
   1,808.21/2,493.81 = 1,434.60/x
3. Step 3: Cross multiply
   1,808.21x = 2,493.81 × 1,434.60
4. Step 4: Simplify right side
   1,808.21x = 3,577,619.83
5. Step 5: Solve for x
   x = 3,577,619.83/1,808.21
6. Step 6: Final answer
   x = 1,978.55