Finding the Fourth Proportional to 1,404.06, 1,937.70 and 1,216.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.06 : 1,937.70 = 1,216.14 : x
2. Step 2: Convert to fraction form
   1,404.06/1,937.70 = 1,216.14/x
3. Step 3: Cross multiply
   1,404.06x = 1,937.70 × 1,216.14
4. Step 4: Simplify right side
   1,404.06x = 2,356,514.48
5. Step 5: Solve for x
   x = 2,356,514.48/1,404.06
6. Step 6: Final answer
   x = 1,678.36