Finding the Fourth Proportional to 2,187.72, 3,015.54 and 1,479.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.72 : 3,015.54 = 1,479.34 : x
2. Step 2: Convert to fraction form
   2,187.72/3,015.54 = 1,479.34/x
3. Step 3: Cross multiply
   2,187.72x = 3,015.54 × 1,479.34
4. Step 4: Simplify right side
   2,187.72x = 4,461,008.94
5. Step 5: Solve for x
   x = 4,461,008.94/2,187.72
6. Step 6: Final answer
   x = 2,039.11