Finding the Fourth Proportional to 1,879.42, 2,592.72 and 1,216.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,879.42 : 2,592.72 = 1,216.49 : x
2. Step 2: Convert to fraction form
   1,879.42/2,592.72 = 1,216.49/x
3. Step 3: Cross multiply
   1,879.42x = 2,592.72 × 1,216.49
4. Step 4: Simplify right side
   1,879.42x = 3,154,004.99
5. Step 5: Solve for x
   x = 3,154,004.99/1,879.42
6. Step 6: Final answer
   x = 1,678.18