Finding the Fourth Proportional to 1,628.76, 2,245.50 and 1,162.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,628.76 : 2,245.50 = 1,162.20 : x
2. Step 2: Convert to fraction form
   1,628.76/2,245.50 = 1,162.20/x
3. Step 3: Cross multiply
   1,628.76x = 2,245.50 × 1,162.20
4. Step 4: Simplify right side
   1,628.76x = 2,609,720.10
5. Step 5: Solve for x
   x = 2,609,720.10/1,628.76
6. Step 6: Final answer
   x = 1,602.27