Finding the Fourth Proportional to 1,474.72, 2,208.24 and 1,390.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,474.72 : 2,208.24 = 1,390.24 : x
2. Step 2: Convert to fraction form
   1,474.72/2,208.24 = 1,390.24/x
3. Step 3: Cross multiply
   1,474.72x = 2,208.24 × 1,390.24
4. Step 4: Simplify right side
   1,474.72x = 3,069,983.58
5. Step 5: Solve for x
   x = 3,069,983.58/1,474.72
6. Step 6: Final answer
   x = 2,081.74