Finding the Fourth Proportional to 1,866.31, 2,796.73 and 1,620.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,866.31 : 2,796.73 = 1,620.27 : x
2. Step 2: Convert to fraction form
   1,866.31/2,796.73 = 1,620.27/x
3. Step 3: Cross multiply
   1,866.31x = 2,796.73 × 1,620.27
4. Step 4: Simplify right side
   1,866.31x = 4,531,453.67
5. Step 5: Solve for x
   x = 4,531,453.67/1,866.31
6. Step 6: Final answer
   x = 2,428.03