Finding the Fourth Proportional to 2,166.25, 2,990.79 and 1,667.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.25 : 2,990.79 = 1,667.95 : x
2. Step 2: Convert to fraction form
   2,166.25/2,990.79 = 1,667.95/x
3. Step 3: Cross multiply
   2,166.25x = 2,990.79 × 1,667.95
4. Step 4: Simplify right side
   2,166.25x = 4,988,488.18
5. Step 5: Solve for x
   x = 4,988,488.18/2,166.25
6. Step 6: Final answer
   x = 2,302.82