Finding the Fourth Proportional to 1,808.09, 2,494.43 and 1,178.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,808.09 : 2,494.43 = 1,178.39 : x
2. Step 2: Convert to fraction form
   1,808.09/2,494.43 = 1,178.39/x
3. Step 3: Cross multiply
   1,808.09x = 2,494.43 × 1,178.39
4. Step 4: Simplify right side
   1,808.09x = 2,939,411.37
5. Step 5: Solve for x
   x = 2,939,411.37/1,808.09
6. Step 6: Final answer
   x = 1,625.70