Finding the Fourth Proportional to 1,478.54, 2,216.37 and 1,416.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478.54 : 2,216.37 = 1,416.62 : x
2. Step 2: Convert to fraction form
   1,478.54/2,216.37 = 1,416.62/x
3. Step 3: Cross multiply
   1,478.54x = 2,216.37 × 1,416.62
4. Step 4: Simplify right side
   1,478.54x = 3,139,754.07
5. Step 5: Solve for x
   x = 3,139,754.07/1,478.54
6. Step 6: Final answer
   x = 2,123.55