Finding the Fourth Proportional to 2,672.80, 3,688.32 and 1,477.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,672.80 : 3,688.32 = 1,477.72 : x
2. Step 2: Convert to fraction form
   2,672.80/3,688.32 = 1,477.72/x
3. Step 3: Cross multiply
   2,672.80x = 3,688.32 × 1,477.72
4. Step 4: Simplify right side
   2,672.80x = 5,450,304.23
5. Step 5: Solve for x
   x = 5,450,304.23/2,672.80
6. Step 6: Final answer
   x = 2,039.17