Finding the Fourth Proportional to 2,669.96, 3,685.20 and 1,622.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,669.96 : 3,685.20 = 1,622.72 : x
2. Step 2: Convert to fraction form
   2,669.96/3,685.20 = 1,622.72/x
3. Step 3: Cross multiply
   2,669.96x = 3,685.20 × 1,622.72
4. Step 4: Simplify right side
   2,669.96x = 5,980,047.74
5. Step 5: Solve for x
   x = 5,980,047.74/2,669.96
6. Step 6: Final answer
   x = 2,239.75