Finding the Fourth Proportional to 1,661.67, 2,276.50 and 1,599.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.67 : 2,276.50 = 1,599.39 : x
2. Step 2: Convert to fraction form
   1,661.67/2,276.50 = 1,599.39/x
3. Step 3: Cross multiply
   1,661.67x = 2,276.50 × 1,599.39
4. Step 4: Simplify right side
   1,661.67x = 3,641,003.34
5. Step 5: Solve for x
   x = 3,641,003.34/1,661.67
6. Step 6: Final answer
   x = 2,191.17