Finding the Fourth Proportional to 1,404.68, 1,934.69 and 1,218.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.68 : 1,934.69 = 1,218.17 : x
2. Step 2: Convert to fraction form
   1,404.68/1,934.69 = 1,218.17/x
3. Step 3: Cross multiply
   1,404.68x = 1,934.69 × 1,218.17
4. Step 4: Simplify right side
   1,404.68x = 2,356,780.06
5. Step 5: Solve for x
   x = 2,356,780.06/1,404.68
6. Step 6: Final answer
   x = 1,677.81